21218036

素因数分解:

$2^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{4649}}^1$

素因数の和:4823

約数の個数: 24

約数和(自身を含む): 42705600

約数和(自身を除く): 21487564

約数列:

[1, 2, 4, 7, 14, 28, 163, 326, 652, 1141, 2282, 4564, 4649, 9298, 18596, 32543, 65086, 130172, 757787, 1515574, 3031148, 5304509, 10609018, 21218036]

約数ペア:

[(1, 21218036), (2, 10609018), (4, 5304509), (7, 3031148), (14, 1515574), (28, 757787), (163, 130172), (326, 65086), (652, 32543), (1141, 18596), (2282, 9298), (4564, 4649)]