18520893

素因数分解:

$3^4\times {\mathrm{137}}^1\times {\mathrm{1669}}^1$

素因数の和:1818

約数の個数: 20

約数和(自身を含む): 27885660

約数和(自身を除く): 9364767

約数列:

[1, 3, 9, 27, 81, 137, 411, 1233, 1669, 3699, 5007, 11097, 15021, 45063, 135189, 228653, 685959, 2057877, 6173631, 18520893]

約数ペア:

[(1, 18520893), (3, 6173631), (9, 2057877), (27, 685959), (81, 228653), (137, 135189), (411, 45063), (1233, 15021), (1669, 11097), (3699, 5007)]