64640107390

素因数分解:

$2^1\times 5^1\times {\mathrm{40529}}^1\times {\mathrm{159491}}^1$

素因数の和:200027

約数の個数: 16

約数和(自身を含む): 116355793680

約数和(自身を除く): 51715686290

約数列:

[1, 2, 5, 10, 40529, 81058, 159491, 202645, 318982, 405290, 797455, 1594910, 6464010739, 12928021478, 32320053695, 64640107390]

約数ペア:

[(1, 64640107390), (2, 32320053695), (5, 12928021478), (10, 6464010739), (40529, 1594910), (81058, 797455), (159491, 405290), (202645, 318982)]