18488980

素因数分解:

$2^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{1619}}^1$

素因数の和:2199

約数の個数: 24

約数和(自身を含む): 38918880

約数和(自身を除く): 20429900

約数列:

[1, 2, 4, 5, 10, 20, 571, 1142, 1619, 2284, 2855, 3238, 5710, 6476, 8095, 11420, 16190, 32380, 924449, 1848898, 3697796, 4622245, 9244490, 18488980]

約数ペア:

[(1, 18488980), (2, 9244490), (4, 4622245), (5, 3697796), (10, 1848898), (20, 924449), (571, 32380), (1142, 16190), (1619, 11420), (2284, 8095), (2855, 6476), (3238, 5710)]