21493090

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{379}}^1$

素因数の和:546

約数の個数: 32

約数和(自身を含む): 39890880

約数和(自身を除く): 18397790

約数列:

[1, 2, 5, 10, 53, 106, 107, 214, 265, 379, 530, 535, 758, 1070, 1895, 3790, 5671, 11342, 20087, 28355, 40174, 40553, 56710, 81106, 100435, 200870, 202765, 405530, 2149309, 4298618, 10746545, 21493090]

約数ペア:

[(1, 21493090), (2, 10746545), (5, 4298618), (10, 2149309), (53, 405530), (106, 202765), (107, 200870), (214, 100435), (265, 81106), (379, 56710), (530, 40553), (535, 40174), (758, 28355), (1070, 20087), (1895, 11342), (3790, 5671)]