18193189

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{311}}^1$

素因数の和:516

約数の個数: 16

約数和(自身を含む): 21355776

約数和(自身を除く): 3162587

約数列:

[1, 7, 61, 137, 311, 427, 959, 2177, 8357, 18971, 42607, 58499, 132797, 298249, 2599027, 18193189]

約数ペア:

[(1, 18193189), (7, 2599027), (61, 298249), (137, 132797), (311, 58499), (427, 42607), (959, 18971), (2177, 8357)]