21493372

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{4001}}^1$

素因数の和:4101

約数の個数: 24

約数和(自身を含む): 40340160

約数和(自身を除く): 18846788

約数列:

[1, 2, 4, 17, 34, 68, 79, 158, 316, 1343, 2686, 4001, 5372, 8002, 16004, 68017, 136034, 272068, 316079, 632158, 1264316, 5373343, 10746686, 21493372]

約数ペア:

[(1, 21493372), (2, 10746686), (4, 5373343), (17, 1264316), (34, 632158), (68, 316079), (79, 272068), (158, 136034), (316, 68017), (1343, 16004), (2686, 8002), (4001, 5372)]