20403855

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11059}}^1$

素因数の和:11111

約数の個数: 24

約数和(自身を含む): 36232560

約数和(自身を除く): 15828705

約数列:

[1, 3, 5, 9, 15, 41, 45, 123, 205, 369, 615, 1845, 11059, 33177, 55295, 99531, 165885, 453419, 497655, 1360257, 2267095, 4080771, 6801285, 20403855]

約数ペア:

[(1, 20403855), (3, 6801285), (5, 4080771), (9, 2267095), (15, 1360257), (41, 497655), (45, 453419), (123, 165885), (205, 99531), (369, 55295), (615, 33177), (1845, 11059)]