20625416

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{109}}^2$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 46045440

約数和(自身を除く): 25420024

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 109, 124, 217, 218, 248, 434, 436, 763, 868, 872, 1526, 1736, 3052, 3379, 6104, 6758, 11881, 13516, 23653, 23762, 27032, 47306, 47524, 83167, 94612, 95048, 166334, 189224, 332668, 368311, 665336, 736622, 1473244, 2578177, 2946488, 5156354, 10312708, 20625416]

約数ペア:

[(1, 20625416), (2, 10312708), (4, 5156354), (7, 2946488), (8, 2578177), (14, 1473244), (28, 736622), (31, 665336), (56, 368311), (62, 332668), (109, 189224), (124, 166334), (217, 95048), (218, 94612), (248, 83167), (434, 47524), (436, 47306), (763, 27032), (868, 23762), (872, 23653), (1526, 13516), (1736, 11881), (3052, 6758), (3379, 6104)]