81607580

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{25033}}^1$

素因数の和:25205

約数の個数: 24

約数和(自身を含む): 172434192

約数和(自身を除く): 90826612

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 25033, 50066, 100132, 125165, 250330, 500660, 4080379, 8160758, 16321516, 20401895, 40803790, 81607580]

約数ペア:

[(1, 81607580), (2, 40803790), (4, 20401895), (5, 16321516), (10, 8160758), (20, 4080379), (163, 500660), (326, 250330), (652, 125165), (815, 100132), (1630, 50066), (3260, 25033)]