78839757680

素因数分解:

$2^4\times 5^1\times {\mathrm{985496971}}^1$

素因数の和:985496984

約数の個数: 20

約数和(自身を含む): 183302436792

約数和(自身を除く): 104462679112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 985496971, 1970993942, 3941987884, 4927484855, 7883975768, 9854969710, 15767951536, 19709939420, 39419878840, 78839757680]

約数ペア:

[(1, 78839757680), (2, 39419878840), (4, 19709939420), (5, 15767951536), (8, 9854969710), (10, 7883975768), (16, 4927484855), (20, 3941987884), (40, 1970993942), (80, 985496971)]