21188307

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{59351}}^1$

素因数の和:59378

約数の個数: 16

約数和(自身を含む): 34186752

約数和(自身を除く): 12998445

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 59351, 178053, 415457, 1008967, 1246371, 3026901, 7062769, 21188307]

約数ペア:

[(1, 21188307), (3, 7062769), (7, 3026901), (17, 1246371), (21, 1008967), (51, 415457), (119, 178053), (357, 59351)]