64131860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{246661}}^1$

素因数の和:246683

約数の個数: 24

約数和(自身を含む): 145037256

約数和(自身を除く): 80905396

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 246661, 493322, 986644, 1233305, 2466610, 3206593, 4933220, 6413186, 12826372, 16032965, 32065930, 64131860]

約数ペア:

[(1, 64131860), (2, 32065930), (4, 16032965), (5, 12826372), (10, 6413186), (13, 4933220), (20, 3206593), (26, 2466610), (52, 1233305), (65, 986644), (130, 493322), (260, 246661)]