20917251

素因数分解:

$3^3\times {\mathrm{167}}^1\times {\mathrm{4639}}^1$

素因数の和:4815

約数の個数: 16

約数和(自身を含む): 31180800

約数和(自身を除く): 10263549

約数列:

[1, 3, 9, 27, 167, 501, 1503, 4509, 4639, 13917, 41751, 125253, 774713, 2324139, 6972417, 20917251]

約数ペア:

[(1, 20917251), (3, 6972417), (9, 2324139), (27, 774713), (167, 125253), (501, 41751), (1503, 13917), (4509, 4639)]