18042320

素因数分解:

$2^4\times 5^1\times {\mathrm{225529}}^1$

素因数の和:225542

約数の個数: 20

約数和(自身を含む): 41948580

約数和(自身を除く): 23906260

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 225529, 451058, 902116, 1127645, 1804232, 2255290, 3608464, 4510580, 9021160, 18042320]

約数ペア:

[(1, 18042320), (2, 9021160), (4, 4510580), (5, 3608464), (8, 2255290), (10, 1804232), (16, 1127645), (20, 902116), (40, 451058), (80, 225529)]