1520661680

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{317}}^1\times {\mathrm{983}}^1$

素因数の和:1374

約数の個数: 80

約数和(自身を含む): 3608501184

約数和(自身を除く): 2087839504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 317, 488, 610, 634, 976, 983, 1220, 1268, 1585, 1966, 2440, 2536, 3170, 3932, 4880, 4915, 5072, 6340, 7864, 9830, 12680, 15728, 19337, 19660, 25360, 38674, 39320, 59963, 77348, 78640, 96685, 119926, 154696, 193370, 239852, 299815, 309392, 311611, 386740, 479704, 599630, 623222, 773480, 959408, 1199260, 1246444, 1546960, 1558055, 2398520, 2492888, 3116110, 4797040, 4985776, 6232220, 12464440, 19008271, 24928880, 38016542, 76033084, 95041355, 152066168, 190082710, 304132336, 380165420, 760330840, 1520661680]

約数ペア:

[(1, 1520661680), (2, 760330840), (4, 380165420), (5, 304132336), (8, 190082710), (10, 152066168), (16, 95041355), (20, 76033084), (40, 38016542), (61, 24928880), (80, 19008271), (122, 12464440), (244, 6232220), (305, 4985776), (317, 4797040), (488, 3116110), (610, 2492888), (634, 2398520), (976, 1558055), (983, 1546960), (1220, 1246444), (1268, 1199260), (1585, 959408), (1966, 773480), (2440, 623222), (2536, 599630), (3170, 479704), (3932, 386740), (4880, 311611), (4915, 309392), (5072, 299815), (6340, 239852), (7864, 193370), (9830, 154696), (12680, 119926), (15728, 96685), (19337, 78640), (19660, 77348), (25360, 59963), (38674, 39320)]