19993855

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{13933}}^1$

素因数の和:13986

約数の個数: 16

約数和(自身を含む): 28090944

約数和(自身を除く): 8097089

約数列:

[1, 5, 7, 35, 41, 205, 287, 1435, 13933, 69665, 97531, 487655, 571253, 2856265, 3998771, 19993855]

約数ペア:

[(1, 19993855), (5, 3998771), (7, 2856265), (35, 571253), (41, 487655), (205, 97531), (287, 69665), (1435, 13933)]