21017647580

素因数分解:

$2^2\times 5^1\times {\mathrm{27749}}^1\times {\mathrm{37871}}^1$

素因数の和:65629

約数の個数: 24

約数和(自身を含む): 44139816000

約数和(自身を除く): 23122168420

約数列:

[1, 2, 4, 5, 10, 20, 27749, 37871, 55498, 75742, 110996, 138745, 151484, 189355, 277490, 378710, 554980, 757420, 1050882379, 2101764758, 4203529516, 5254411895, 10508823790, 21017647580]

約数ペア:

[(1, 21017647580), (2, 10508823790), (4, 5254411895), (5, 4203529516), (10, 2101764758), (20, 1050882379), (27749, 757420), (37871, 554980), (55498, 378710), (75742, 277490), (110996, 189355), (138745, 151484)]