78264220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{64151}}^1$

素因数の和:64221

約数の個数: 24

約数和(自身を含む): 167051808

約数和(自身を除く): 88787588

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 64151, 128302, 256604, 320755, 641510, 1283020, 3913211, 7826422, 15652844, 19566055, 39132110, 78264220]

約数ペア:

[(1, 78264220), (2, 39132110), (4, 19566055), (5, 15652844), (10, 7826422), (20, 3913211), (61, 1283020), (122, 641510), (244, 320755), (305, 256604), (610, 128302), (1220, 64151)]