21149140

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{17923}}^1$

素因数の和:17991

約数の個数: 24

約数和(自身を含む): 45168480

約数和(自身を除く): 24019340

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 236, 295, 590, 1180, 17923, 35846, 71692, 89615, 179230, 358460, 1057457, 2114914, 4229828, 5287285, 10574570, 21149140]

約数ペア:

[(1, 21149140), (2, 10574570), (4, 5287285), (5, 4229828), (10, 2114914), (20, 1057457), (59, 358460), (118, 179230), (236, 89615), (295, 71692), (590, 35846), (1180, 17923)]