1389395

素因数分解:

$5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:179

約数の個数: 24

約数和(自身を含む): 1994544

約数和(自身を除く): 605149

約数列:

[1, 5, 7, 35, 49, 53, 107, 245, 265, 371, 535, 749, 1855, 2597, 3745, 5243, 5671, 12985, 26215, 28355, 39697, 198485, 277879, 1389395]

約数ペア:

[(1, 1389395), (5, 277879), (7, 198485), (35, 39697), (49, 28355), (53, 26215), (107, 12985), (245, 5671), (265, 5243), (371, 3745), (535, 2597), (749, 1855)]