204500920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{393271}}^1$

素因数の和:393295

約数の個数: 32

約数和(自身を含む): 495522720

約数和(自身を除く): 291021800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 393271, 786542, 1573084, 1966355, 3146168, 3932710, 5112523, 7865420, 10225046, 15730840, 20450092, 25562615, 40900184, 51125230, 102250460, 204500920]

約数ペア:

[(1, 204500920), (2, 102250460), (4, 51125230), (5, 40900184), (8, 25562615), (10, 20450092), (13, 15730840), (20, 10225046), (26, 7865420), (40, 5112523), (52, 3932710), (65, 3146168), (104, 1966355), (130, 1573084), (260, 786542), (520, 393271)]