20137842920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38726621}}^1$

素因数の和:38726645

約数の個数: 32

約数和(自身を含む): 48795543720

約数和(自身を除く): 28657700800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 38726621, 77453242, 154906484, 193633105, 309812968, 387266210, 503446073, 774532420, 1006892146, 1549064840, 2013784292, 2517230365, 4027568584, 5034460730, 10068921460, 20137842920]

約数ペア:

[(1, 20137842920), (2, 10068921460), (4, 5034460730), (5, 4027568584), (8, 2517230365), (10, 2013784292), (13, 1549064840), (20, 1006892146), (26, 774532420), (40, 503446073), (52, 387266210), (65, 309812968), (104, 193633105), (130, 154906484), (260, 77453242), (520, 38726621)]