20980401960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1\times {\mathrm{3613}}^1$

素因数の和:3888

約数の個数: 256

約数和(自身を含む): 74606837760

約数和(自身を除く): 53626435800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 56, 60, 62, 70, 84, 93, 105, 120, 124, 140, 155, 168, 186, 210, 217, 223, 248, 280, 310, 372, 420, 434, 446, 465, 620, 651, 669, 744, 840, 868, 892, 930, 1085, 1115, 1240, 1302, 1338, 1561, 1736, 1784, 1860, 2170, 2230, 2604, 2676, 3122, 3255, 3345, 3613, 3720, 4340, 4460, 4683, 5208, 5352, 6244, 6510, 6690, 6913, 7226, 7805, 8680, 8920, 9366, 10839, 12488, 13020, 13380, 13826, 14452, 15610, 18065, 18732, 20739, 21678, 23415, 25291, 26040, 26760, 27652, 28904, 31220, 34565, 36130, 37464, 41478, 43356, 46830, 48391, 50582, 54195, 55304, 62440, 69130, 72260, 75873, 82956, 86712, 93660, 96782, 101164, 103695, 108390, 112003, 126455, 138260, 144520, 145173, 151746, 165912, 187320, 193564, 202328, 207390, 216780, 224006, 241955, 252910, 276520, 290346, 303492, 336009, 379365, 387128, 414780, 433560, 448012, 483910, 505820, 560015, 580692, 606984, 672018, 725865, 758730, 784021, 805699, 829560, 896024, 967820, 1011640, 1120030, 1161384, 1344036, 1451730, 1517460, 1568042, 1611398, 1680045, 1935640, 2240060, 2352063, 2417097, 2688072, 2903460, 3034920, 3136084, 3222796, 3360090, 3920105, 4028495, 4480120, 4704126, 4834194, 5639893, 5806920, 6272168, 6445592, 6720180, 7840210, 8056990, 9408252, 9668388, 11279786, 11760315, 12085485, 13440360, 15680420, 16113980, 16919679, 18816504, 19336776, 22559572, 23520630, 24170970, 24976669, 28199465, 31360840, 32227960, 33839358, 45119144, 47041260, 48341940, 49953338, 56398930, 67678716, 74930007, 84598395, 94082520, 96683880, 99906676, 112797860, 124883345, 135357432, 149860014, 169196790, 174836683, 199813352, 225595720, 249766690, 299720028, 338393580, 349673366, 374650035, 499533380, 524510049, 599440056, 676787160, 699346732, 749300070, 874183415, 999066760, 1049020098, 1398693464, 1498600140, 1748366830, 2098040196, 2622550245, 2997200280, 3496733660, 4196080392, 5245100490, 6993467320, 10490200980, 20980401960]

約数ペア:

[(1, 20980401960), (2, 10490200980), (3, 6993467320), (4, 5245100490), (5, 4196080392), (6, 3496733660), (7, 2997200280), (8, 2622550245), (10, 2098040196), (12, 1748366830), (14, 1498600140), (15, 1398693464), (20, 1049020098), (21, 999066760), (24, 874183415), (28, 749300070), (30, 699346732), (31, 676787160), (35, 599440056), (40, 524510049), (42, 499533380), (56, 374650035), (60, 349673366), (62, 338393580), (70, 299720028), (84, 249766690), (93, 225595720), (105, 199813352), (120, 174836683), (124, 169196790), (140, 149860014), (155, 135357432), (168, 124883345), (186, 112797860), (210, 99906676), (217, 96683880), (223, 94082520), (248, 84598395), (280, 74930007), (310, 67678716), (372, 56398930), (420, 49953338), (434, 48341940), (446, 47041260), (465, 45119144), (620, 33839358), (651, 32227960), (669, 31360840), (744, 28199465), (840, 24976669), (868, 24170970), (892, 23520630), (930, 22559572), (1085, 19336776), (1115, 18816504), (1240, 16919679), (1302, 16113980), (1338, 15680420), (1561, 13440360), (1736, 12085485), (1784, 11760315), (1860, 11279786), (2170, 9668388), (2230, 9408252), (2604, 8056990), (2676, 7840210), (3122, 6720180), (3255, 6445592), (3345, 6272168), (3613, 5806920), (3720, 5639893), (4340, 4834194), (4460, 4704126), (4683, 4480120), (5208, 4028495), (5352, 3920105), (6244, 3360090), (6510, 3222796), (6690, 3136084), (6913, 3034920), (7226, 2903460), (7805, 2688072), (8680, 2417097), (8920, 2352063), (9366, 2240060), (10839, 1935640), (12488, 1680045), (13020, 1611398), (13380, 1568042), (13826, 1517460), (14452, 1451730), (15610, 1344036), (18065, 1161384), (18732, 1120030), (20739, 1011640), (21678, 967820), (23415, 896024), (25291, 829560), (26040, 805699), (26760, 784021), (27652, 758730), (28904, 725865), (31220, 672018), (34565, 606984), (36130, 580692), (37464, 560015), (41478, 505820), (43356, 483910), (46830, 448012), (48391, 433560), (50582, 414780), (54195, 387128), (55304, 379365), (62440, 336009), (69130, 303492), (72260, 290346), (75873, 276520), (82956, 252910), (86712, 241955), (93660, 224006), (96782, 216780), (101164, 207390), (103695, 202328), (108390, 193564), (112003, 187320), (126455, 165912), (138260, 151746), (144520, 145173)]