207620920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{399271}}^1$

素因数の和:399295

約数の個数: 32

約数和(自身を含む): 503082720

約数和(自身を除く): 295461800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 399271, 798542, 1597084, 1996355, 3194168, 3992710, 5190523, 7985420, 10381046, 15970840, 20762092, 25952615, 41524184, 51905230, 103810460, 207620920]

約数ペア:

[(1, 207620920), (2, 103810460), (4, 51905230), (5, 41524184), (8, 25952615), (10, 20762092), (13, 15970840), (20, 10381046), (26, 7985420), (40, 5190523), (52, 3992710), (65, 3194168), (104, 1996355), (130, 1597084), (260, 798542), (520, 399271)]