39928221

素因数分解:

$3^4\times {\mathrm{61}}^1\times {\mathrm{8081}}^1$

素因数の和:8154

約数の個数: 20

約数和(自身を含む): 60631164

約数和(自身を除く): 20702943

約数列:

[1, 3, 9, 27, 61, 81, 183, 549, 1647, 4941, 8081, 24243, 72729, 218187, 492941, 654561, 1478823, 4436469, 13309407, 39928221]

約数ペア:

[(1, 39928221), (3, 13309407), (9, 4436469), (27, 1478823), (61, 654561), (81, 492941), (183, 218187), (549, 72729), (1647, 24243), (4941, 8081)]