81718215

素因数分解:

$3^1\times 5^1\times {\mathrm{2161}}^1\times {\mathrm{2521}}^1$

素因数の和:4690

約数の個数: 16

約数和(自身を含む): 130861536

約数和(自身を除く): 49143321

約数列:

[1, 3, 5, 15, 2161, 2521, 6483, 7563, 10805, 12605, 32415, 37815, 5447881, 16343643, 27239405, 81718215]

約数ペア:

[(1, 81718215), (3, 27239405), (5, 16343643), (15, 5447881), (2161, 37815), (2521, 32415), (6483, 12605), (7563, 10805)]