400016880

素因数分解:

$2^4\times 3^6\times 5^1\times {\mathrm{19}}^3$

素因数の和:88

約数の個数: 280

約数和(自身を含む): 1471877520

約数和(自身を除く): 1071860640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 48, 54, 57, 60, 72, 76, 80, 81, 90, 95, 108, 114, 120, 135, 144, 152, 162, 171, 180, 190, 216, 228, 240, 243, 270, 285, 304, 324, 342, 360, 361, 380, 405, 432, 456, 486, 513, 540, 570, 648, 684, 720, 722, 729, 760, 810, 855, 912, 972, 1026, 1080, 1083, 1140, 1215, 1296, 1368, 1444, 1458, 1520, 1539, 1620, 1710, 1805, 1944, 2052, 2160, 2166, 2280, 2430, 2565, 2736, 2888, 2916, 3078, 3240, 3249, 3420, 3610, 3645, 3888, 4104, 4332, 4560, 4617, 4860, 5130, 5415, 5776, 5832, 6156, 6480, 6498, 6840, 6859, 7220, 7290, 7695, 8208, 8664, 9234, 9720, 9747, 10260, 10830, 11664, 12312, 12996, 13680, 13718, 13851, 14440, 14580, 15390, 16245, 17328, 18468, 19440, 19494, 20520, 20577, 21660, 23085, 24624, 25992, 27436, 27702, 28880, 29160, 29241, 30780, 32490, 34295, 36936, 38988, 41040, 41154, 43320, 46170, 48735, 51984, 54872, 55404, 58320, 58482, 61560, 61731, 64980, 68590, 69255, 73872, 77976, 82308, 86640, 87723, 92340, 97470, 102885, 109744, 110808, 116964, 123120, 123462, 129960, 137180, 138510, 146205, 155952, 164616, 175446, 184680, 185193, 194940, 205770, 221616, 233928, 246924, 259920, 263169, 274360, 277020, 292410, 308655, 329232, 350892, 369360, 370386, 389880, 411540, 438615, 467856, 493848, 526338, 548720, 554040, 555579, 584820, 617310, 701784, 740772, 779760, 823080, 877230, 925965, 987696, 1052676, 1108080, 1111158, 1169640, 1234620, 1315845, 1403568, 1481544, 1646160, 1666737, 1754460, 1851930, 2105352, 2222316, 2339280, 2469240, 2631690, 2777895, 2963088, 3333474, 3508920, 3703860, 4210704, 4444632, 4938480, 5000211, 5263380, 5555790, 6666948, 7017840, 7407720, 8333685, 8889264, 10000422, 10526760, 11111580, 13333896, 14815440, 16667370, 20000844, 21053520, 22223160, 25001055, 26667792, 33334740, 40001688, 44446320, 50002110, 66669480, 80003376, 100004220, 133338960, 200008440, 400016880]

約数ペア:

[(1, 400016880), (2, 200008440), (3, 133338960), (4, 100004220), (5, 80003376), (6, 66669480), (8, 50002110), (9, 44446320), (10, 40001688), (12, 33334740), (15, 26667792), (16, 25001055), (18, 22223160), (19, 21053520), (20, 20000844), (24, 16667370), (27, 14815440), (30, 13333896), (36, 11111580), (38, 10526760), (40, 10000422), (45, 8889264), (48, 8333685), (54, 7407720), (57, 7017840), (60, 6666948), (72, 5555790), (76, 5263380), (80, 5000211), (81, 4938480), (90, 4444632), (95, 4210704), (108, 3703860), (114, 3508920), (120, 3333474), (135, 2963088), (144, 2777895), (152, 2631690), (162, 2469240), (171, 2339280), (180, 2222316), (190, 2105352), (216, 1851930), (228, 1754460), (240, 1666737), (243, 1646160), (270, 1481544), (285, 1403568), (304, 1315845), (324, 1234620), (342, 1169640), (360, 1111158), (361, 1108080), (380, 1052676), (405, 987696), (432, 925965), (456, 877230), (486, 823080), (513, 779760), (540, 740772), (570, 701784), (648, 617310), (684, 584820), (720, 555579), (722, 554040), (729, 548720), (760, 526338), (810, 493848), (855, 467856), (912, 438615), (972, 411540), (1026, 389880), (1080, 370386), (1083, 369360), (1140, 350892), (1215, 329232), (1296, 308655), (1368, 292410), (1444, 277020), (1458, 274360), (1520, 263169), (1539, 259920), (1620, 246924), (1710, 233928), (1805, 221616), (1944, 205770), (2052, 194940), (2160, 185193), (2166, 184680), (2280, 175446), (2430, 164616), (2565, 155952), (2736, 146205), (2888, 138510), (2916, 137180), (3078, 129960), (3240, 123462), (3249, 123120), (3420, 116964), (3610, 110808), (3645, 109744), (3888, 102885), (4104, 97470), (4332, 92340), (4560, 87723), (4617, 86640), (4860, 82308), (5130, 77976), (5415, 73872), (5776, 69255), (5832, 68590), (6156, 64980), (6480, 61731), (6498, 61560), (6840, 58482), (6859, 58320), (7220, 55404), (7290, 54872), (7695, 51984), (8208, 48735), (8664, 46170), (9234, 43320), (9720, 41154), (9747, 41040), (10260, 38988), (10830, 36936), (11664, 34295), (12312, 32490), (12996, 30780), (13680, 29241), (13718, 29160), (13851, 28880), (14440, 27702), (14580, 27436), (15390, 25992), (16245, 24624), (17328, 23085), (18468, 21660), (19440, 20577), (19494, 20520)]