21318708

素因数分解:

$2^2\times 3^1\times {\mathrm{139}}^1\times {\mathrm{12781}}^1$

素因数の和:12927

約数の個数: 24

約数和(自身を含む): 50105440

約数和(自身を除く): 28786732

約数列:

[1, 2, 3, 4, 6, 12, 139, 278, 417, 556, 834, 1668, 12781, 25562, 38343, 51124, 76686, 153372, 1776559, 3553118, 5329677, 7106236, 10659354, 21318708]

約数ペア:

[(1, 21318708), (2, 10659354), (3, 7106236), (4, 5329677), (6, 3553118), (12, 1776559), (139, 153372), (278, 76686), (417, 51124), (556, 38343), (834, 25562), (1668, 12781)]