678784850

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{367}}^1\times {\mathrm{521}}^1$

素因数の和:971

約数の個数: 48

約数和(自身を含む): 1286274816

約数和(自身を除く): 607489966

約数列:

[1, 2, 5, 10, 25, 50, 71, 142, 355, 367, 521, 710, 734, 1042, 1775, 1835, 2605, 3550, 3670, 5210, 9175, 13025, 18350, 26050, 26057, 36991, 52114, 73982, 130285, 184955, 191207, 260570, 369910, 382414, 651425, 924775, 956035, 1302850, 1849550, 1912070, 4780175, 9560350, 13575697, 27151394, 67878485, 135756970, 339392425, 678784850]

約数ペア:

[(1, 678784850), (2, 339392425), (5, 135756970), (10, 67878485), (25, 27151394), (50, 13575697), (71, 9560350), (142, 4780175), (355, 1912070), (367, 1849550), (521, 1302850), (710, 956035), (734, 924775), (1042, 651425), (1775, 382414), (1835, 369910), (2605, 260570), (3550, 191207), (3670, 184955), (5210, 130285), (9175, 73982), (13025, 52114), (18350, 36991), (26050, 26057)]