18112720

素因数分解:

$2^4\times 5^1\times {\mathrm{226409}}^1$

素因数の和:226422

約数の個数: 20

約数和(自身を含む): 42112260

約数和(自身を除く): 23999540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 226409, 452818, 905636, 1132045, 1811272, 2264090, 3622544, 4528180, 9056360, 18112720]

約数ペア:

[(1, 18112720), (2, 9056360), (4, 4528180), (5, 3622544), (8, 2264090), (10, 1811272), (16, 1132045), (20, 905636), (40, 452818), (80, 226409)]