18109160

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1129}}^1$

素因数の和:1541

約数の個数: 32

約数和(自身を含む): 40883400

約数和(自身を除く): 22774240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1129, 1604, 2005, 2258, 3208, 4010, 4516, 5645, 8020, 9032, 11290, 16040, 22580, 45160, 452729, 905458, 1810916, 2263645, 3621832, 4527290, 9054580, 18109160]

約数ペア:

[(1, 18109160), (2, 9054580), (4, 4527290), (5, 3621832), (8, 2263645), (10, 1810916), (20, 905458), (40, 452729), (401, 45160), (802, 22580), (1129, 16040), (1604, 11290), (2005, 9032), (2258, 8020), (3208, 5645), (4010, 4516)]