28201320

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1$

素因数の和:93

約数の個数: 288

約数和(自身を含む): 114117120

約数和(自身を除く): 85915800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 19, 20, 21, 24, 28, 30, 31, 35, 36, 38, 40, 42, 45, 56, 57, 60, 62, 63, 70, 72, 76, 84, 90, 93, 95, 105, 114, 120, 124, 126, 133, 140, 152, 155, 168, 171, 180, 186, 190, 210, 217, 228, 248, 252, 266, 279, 280, 285, 310, 315, 342, 360, 361, 372, 380, 399, 420, 434, 456, 465, 504, 532, 558, 570, 589, 620, 630, 651, 665, 684, 722, 744, 760, 798, 840, 855, 868, 930, 1064, 1083, 1085, 1116, 1140, 1178, 1197, 1240, 1260, 1302, 1330, 1368, 1395, 1444, 1596, 1710, 1736, 1767, 1805, 1860, 1953, 1995, 2166, 2170, 2232, 2280, 2356, 2394, 2520, 2527, 2604, 2660, 2790, 2888, 2945, 3192, 3249, 3255, 3420, 3534, 3610, 3720, 3906, 3990, 4123, 4332, 4340, 4712, 4788, 5054, 5208, 5301, 5320, 5415, 5580, 5890, 5985, 6498, 6510, 6840, 7068, 7220, 7581, 7812, 7980, 8246, 8664, 8680, 8835, 9576, 9765, 10108, 10602, 10830, 11160, 11191, 11780, 11970, 12369, 12635, 12996, 13020, 14136, 14440, 15162, 15624, 15960, 16245, 16492, 17670, 19530, 20216, 20615, 21204, 21660, 22382, 22743, 23560, 23940, 24738, 25270, 25992, 26040, 26505, 30324, 32490, 32984, 33573, 35340, 37107, 37905, 39060, 41230, 42408, 43320, 44764, 45486, 47880, 49476, 50540, 53010, 55955, 60648, 61845, 64980, 67146, 70680, 74214, 75810, 78120, 78337, 82460, 89528, 90972, 98952, 100719, 101080, 106020, 111910, 113715, 123690, 129960, 134292, 148428, 151620, 156674, 164920, 167865, 181944, 185535, 201438, 212040, 223820, 227430, 235011, 247380, 268584, 296856, 303240, 313348, 335730, 371070, 391685, 402876, 447640, 454860, 470022, 494760, 503595, 626696, 671460, 705033, 742140, 783370, 805752, 909720, 940044, 1007190, 1175055, 1342920, 1410066, 1484280, 1566740, 1880088, 2014380, 2350110, 2820132, 3133480, 3525165, 4028760, 4700220, 5640264, 7050330, 9400440, 14100660, 28201320]

約数ペア:

[(1, 28201320), (2, 14100660), (3, 9400440), (4, 7050330), (5, 5640264), (6, 4700220), (7, 4028760), (8, 3525165), (9, 3133480), (10, 2820132), (12, 2350110), (14, 2014380), (15, 1880088), (18, 1566740), (19, 1484280), (20, 1410066), (21, 1342920), (24, 1175055), (28, 1007190), (30, 940044), (31, 909720), (35, 805752), (36, 783370), (38, 742140), (40, 705033), (42, 671460), (45, 626696), (56, 503595), (57, 494760), (60, 470022), (62, 454860), (63, 447640), (70, 402876), (72, 391685), (76, 371070), (84, 335730), (90, 313348), (93, 303240), (95, 296856), (105, 268584), (114, 247380), (120, 235011), (124, 227430), (126, 223820), (133, 212040), (140, 201438), (152, 185535), (155, 181944), (168, 167865), (171, 164920), (180, 156674), (186, 151620), (190, 148428), (210, 134292), (217, 129960), (228, 123690), (248, 113715), (252, 111910), (266, 106020), (279, 101080), (280, 100719), (285, 98952), (310, 90972), (315, 89528), (342, 82460), (360, 78337), (361, 78120), (372, 75810), (380, 74214), (399, 70680), (420, 67146), (434, 64980), (456, 61845), (465, 60648), (504, 55955), (532, 53010), (558, 50540), (570, 49476), (589, 47880), (620, 45486), (630, 44764), (651, 43320), (665, 42408), (684, 41230), (722, 39060), (744, 37905), (760, 37107), (798, 35340), (840, 33573), (855, 32984), (868, 32490), (930, 30324), (1064, 26505), (1083, 26040), (1085, 25992), (1116, 25270), (1140, 24738), (1178, 23940), (1197, 23560), (1240, 22743), (1260, 22382), (1302, 21660), (1330, 21204), (1368, 20615), (1395, 20216), (1444, 19530), (1596, 17670), (1710, 16492), (1736, 16245), (1767, 15960), (1805, 15624), (1860, 15162), (1953, 14440), (1995, 14136), (2166, 13020), (2170, 12996), (2232, 12635), (2280, 12369), (2356, 11970), (2394, 11780), (2520, 11191), (2527, 11160), (2604, 10830), (2660, 10602), (2790, 10108), (2888, 9765), (2945, 9576), (3192, 8835), (3249, 8680), (3255, 8664), (3420, 8246), (3534, 7980), (3610, 7812), (3720, 7581), (3906, 7220), (3990, 7068), (4123, 6840), (4332, 6510), (4340, 6498), (4712, 5985), (4788, 5890), (5054, 5580), (5208, 5415), (5301, 5320)]