21139918

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{401}}^1\times {\mathrm{613}}^1$

素因数の和:1059

約数の個数: 16

約数和(自身を含む): 32581296

約数和(自身を除く): 11441378

約数列:

[1, 2, 43, 86, 401, 613, 802, 1226, 17243, 26359, 34486, 52718, 245813, 491626, 10569959, 21139918]

約数ペア:

[(1, 21139918), (2, 10569959), (43, 491626), (86, 245813), (401, 52718), (613, 34486), (802, 26359), (1226, 17243)]