20457910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{1039}}^1$

素因数の和:1236

約数の個数: 32

約数和(自身を含む): 40435200

約数和(自身を除く): 19977290

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 179, 358, 895, 1039, 1790, 1969, 2078, 3938, 5195, 9845, 10390, 11429, 19690, 22858, 57145, 114290, 185981, 371962, 929905, 1859810, 2045791, 4091582, 10228955, 20457910]

約数ペア:

[(1, 20457910), (2, 10228955), (5, 4091582), (10, 2045791), (11, 1859810), (22, 929905), (55, 371962), (110, 185981), (179, 114290), (358, 57145), (895, 22858), (1039, 19690), (1790, 11429), (1969, 10390), (2078, 9845), (3938, 5195)]