18783974

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{13997}}^1$

素因数の和:14071

約数の個数: 16

約数和(自身を含む): 31243536

約数和(自身を除く): 12459562

約数列:

[1, 2, 11, 22, 61, 122, 671, 1342, 13997, 27994, 153967, 307934, 853817, 1707634, 9391987, 18783974]

約数ペア:

[(1, 18783974), (2, 9391987), (11, 1707634), (22, 853817), (61, 307934), (122, 153967), (671, 27994), (1342, 13997)]