256411080

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1973}}^1$

素因数の和:2028

約数の個数: 144

約数和(自身を含む): 879949980

約数和(自身を除く): 623538900

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 30, 36, 38, 40, 45, 57, 60, 72, 76, 90, 95, 114, 120, 152, 171, 180, 190, 228, 285, 342, 360, 361, 380, 456, 570, 684, 722, 760, 855, 1083, 1140, 1368, 1444, 1710, 1805, 1973, 2166, 2280, 2888, 3249, 3420, 3610, 3946, 4332, 5415, 5919, 6498, 6840, 7220, 7892, 8664, 9865, 10830, 11838, 12996, 14440, 15784, 16245, 17757, 19730, 21660, 23676, 25992, 29595, 32490, 35514, 37487, 39460, 43320, 47352, 59190, 64980, 71028, 74974, 78920, 88785, 112461, 118380, 129960, 142056, 149948, 177570, 187435, 224922, 236760, 299896, 337383, 355140, 374870, 449844, 562305, 674766, 710280, 712253, 749740, 899688, 1124610, 1349532, 1424506, 1499480, 1686915, 2136759, 2249220, 2699064, 2849012, 3373830, 3561265, 4273518, 4498440, 5698024, 6410277, 6747660, 7122530, 8547036, 10683795, 12820554, 13495320, 14245060, 17094072, 21367590, 25641108, 28490120, 32051385, 42735180, 51282216, 64102770, 85470360, 128205540, 256411080]

約数ペア:

[(1, 256411080), (2, 128205540), (3, 85470360), (4, 64102770), (5, 51282216), (6, 42735180), (8, 32051385), (9, 28490120), (10, 25641108), (12, 21367590), (15, 17094072), (18, 14245060), (19, 13495320), (20, 12820554), (24, 10683795), (30, 8547036), (36, 7122530), (38, 6747660), (40, 6410277), (45, 5698024), (57, 4498440), (60, 4273518), (72, 3561265), (76, 3373830), (90, 2849012), (95, 2699064), (114, 2249220), (120, 2136759), (152, 1686915), (171, 1499480), (180, 1424506), (190, 1349532), (228, 1124610), (285, 899688), (342, 749740), (360, 712253), (361, 710280), (380, 674766), (456, 562305), (570, 449844), (684, 374870), (722, 355140), (760, 337383), (855, 299896), (1083, 236760), (1140, 224922), (1368, 187435), (1444, 177570), (1710, 149948), (1805, 142056), (1973, 129960), (2166, 118380), (2280, 112461), (2888, 88785), (3249, 78920), (3420, 74974), (3610, 71028), (3946, 64980), (4332, 59190), (5415, 47352), (5919, 43320), (6498, 39460), (6840, 37487), (7220, 35514), (7892, 32490), (8664, 29595), (9865, 25992), (10830, 23676), (11838, 21660), (12996, 19730), (14440, 17757), (15784, 16245)]