81907280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11251}}^1$

素因数の和:11284

約数の個数: 80

約数和(自身を含む): 234401664

約数和(自身を除く): 152494384

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 3640, 7280, 11251, 22502, 45004, 56255, 78757, 90008, 112510, 146263, 157514, 180016, 225020, 292526, 315028, 393785, 450040, 585052, 630056, 731315, 787570, 900080, 1023841, 1170104, 1260112, 1462630, 1575140, 2047682, 2340208, 2925260, 3150280, 4095364, 5119205, 5850520, 6300560, 8190728, 10238410, 11701040, 16381456, 20476820, 40953640, 81907280]

約数ペア:

[(1, 81907280), (2, 40953640), (4, 20476820), (5, 16381456), (7, 11701040), (8, 10238410), (10, 8190728), (13, 6300560), (14, 5850520), (16, 5119205), (20, 4095364), (26, 3150280), (28, 2925260), (35, 2340208), (40, 2047682), (52, 1575140), (56, 1462630), (65, 1260112), (70, 1170104), (80, 1023841), (91, 900080), (104, 787570), (112, 731315), (130, 630056), (140, 585052), (182, 450040), (208, 393785), (260, 315028), (280, 292526), (364, 225020), (455, 180016), (520, 157514), (560, 146263), (728, 112510), (910, 90008), (1040, 78757), (1456, 56255), (1820, 45004), (3640, 22502), (7280, 11251)]