19918951

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{467}}^1$

素因数の和:690

約数の個数: 16

約数和(自身を含む): 22879584

約数和(自身を除く): 2960633

約数列:

[1, 13, 17, 193, 221, 467, 2509, 3281, 6071, 7939, 42653, 90131, 103207, 1171703, 1532227, 19918951]

約数ペア:

[(1, 19918951), (13, 1532227), (17, 1171703), (193, 103207), (221, 90131), (467, 42653), (2509, 7939), (3281, 6071)]