20414980

素因数分解:

$2^2\times 5^1\times {\mathrm{479}}^1\times {\mathrm{2131}}^1$

素因数の和:2619

約数の個数: 24

約数和(自身を含む): 42981120

約数和(自身を除く): 22566140

約数列:

[1, 2, 4, 5, 10, 20, 479, 958, 1916, 2131, 2395, 4262, 4790, 8524, 9580, 10655, 21310, 42620, 1020749, 2041498, 4082996, 5103745, 10207490, 20414980]

約数ペア:

[(1, 20414980), (2, 10207490), (4, 5103745), (5, 4082996), (10, 2041498), (20, 1020749), (479, 42620), (958, 21310), (1916, 10655), (2131, 9580), (2395, 8524), (4262, 4790)]