21219717

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{401}}^1\times {\mathrm{569}}^1$

素因数の和:1004

約数の個数: 16

約数和(自身を含む): 29329920

約数和(自身を除く): 8110203

約数列:

[1, 3, 31, 93, 401, 569, 1203, 1707, 12431, 17639, 37293, 52917, 228169, 684507, 7073239, 21219717]

約数ペア:

[(1, 21219717), (3, 7073239), (31, 684507), (93, 228169), (401, 52917), (569, 37293), (1203, 17639), (1707, 12431)]