21921347

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{4493}}^1$

素因数の和:4558

約数の個数: 16

約数和(自身を含む): 27179712

約数和(自身を除く): 5258365

約数列:

[1, 7, 17, 41, 119, 287, 697, 4493, 4879, 31451, 76381, 184213, 534667, 1289491, 3131621, 21921347]

約数ペア:

[(1, 21921347), (7, 3131621), (17, 1289491), (41, 534667), (119, 184213), (287, 76381), (697, 31451), (4493, 4879)]