31236440

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{3701}}^1$

素因数の和:3923

約数の個数: 32

約数和(自身を含む): 70634160

約数和(自身を除く): 39397720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 3701, 4220, 7402, 8440, 14804, 18505, 29608, 37010, 74020, 148040, 780911, 1561822, 3123644, 3904555, 6247288, 7809110, 15618220, 31236440]

約数ペア:

[(1, 31236440), (2, 15618220), (4, 7809110), (5, 6247288), (8, 3904555), (10, 3123644), (20, 1561822), (40, 780911), (211, 148040), (422, 74020), (844, 37010), (1055, 29608), (1688, 18505), (2110, 14804), (3701, 8440), (4220, 7402)]