21187810

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{5711}}^1$

素因数の和:5778

約数の個数: 32

約数和(自身を含む): 44416512

約数和(自身を除く): 23228702

約数列:

[1, 2, 5, 7, 10, 14, 35, 53, 70, 106, 265, 371, 530, 742, 1855, 3710, 5711, 11422, 28555, 39977, 57110, 79954, 199885, 302683, 399770, 605366, 1513415, 2118781, 3026830, 4237562, 10593905, 21187810]

約数ペア:

[(1, 21187810), (2, 10593905), (5, 4237562), (7, 3026830), (10, 2118781), (14, 1513415), (35, 605366), (53, 399770), (70, 302683), (106, 199885), (265, 79954), (371, 57110), (530, 39977), (742, 28555), (1855, 11422), (3710, 5711)]