18242540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{22247}}^1$

素因数の和:22297

約数の個数: 24

約数和(自身を含む): 39245472

約数和(自身を除く): 21002932

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 22247, 44494, 88988, 111235, 222470, 444940, 912127, 1824254, 3648508, 4560635, 9121270, 18242540]

約数ペア:

[(1, 18242540), (2, 9121270), (4, 4560635), (5, 3648508), (10, 1824254), (20, 912127), (41, 444940), (82, 222470), (164, 111235), (205, 88988), (410, 44494), (820, 22247)]