81261265

素因数分解:

$5^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1\times {\mathrm{1279}}^1$

素因数の和:1512

約数の個数: 16

約数和(自身を含む): 99348480

約数和(自身を除く): 18087215

約数列:

[1, 5, 97, 131, 485, 655, 1279, 6395, 12707, 63535, 124063, 167549, 620315, 837745, 16252253, 81261265]

約数ペア:

[(1, 81261265), (5, 16252253), (97, 837745), (131, 620315), (485, 167549), (655, 124063), (1279, 63535), (6395, 12707)]