64638820

素因数分解:

$2^2\times 5^1\times {\mathrm{1531}}^1\times {\mathrm{2111}}^1$

素因数の和:3651

約数の個数: 24

約数和(自身を含む): 135894528

約数和(自身を除く): 71255708

約数列:

[1, 2, 4, 5, 10, 20, 1531, 2111, 3062, 4222, 6124, 7655, 8444, 10555, 15310, 21110, 30620, 42220, 3231941, 6463882, 12927764, 16159705, 32319410, 64638820]

約数ペア:

[(1, 64638820), (2, 32319410), (4, 16159705), (5, 12927764), (10, 6463882), (20, 3231941), (1531, 42220), (2111, 30620), (3062, 21110), (4222, 15310), (6124, 10555), (7655, 8444)]