5397220

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{641}}^1$

素因数の和:1071

約数の個数: 24

約数和(自身を含む): 11378808

約数和(自身を除く): 5981588

約数列:

[1, 2, 4, 5, 10, 20, 421, 641, 842, 1282, 1684, 2105, 2564, 3205, 4210, 6410, 8420, 12820, 269861, 539722, 1079444, 1349305, 2698610, 5397220]

約数ペア:

[(1, 5397220), (2, 2698610), (4, 1349305), (5, 1079444), (10, 539722), (20, 269861), (421, 12820), (641, 8420), (842, 6410), (1282, 4210), (1684, 3205), (2105, 2564)]