21991591321

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{3929}}^1\times {\mathrm{21611}}^1$

素因数の和:25584

約数の個数: 16

約数和(自身を含む): 25820288640

約数和(自身を除く): 3828697319

約数列:

[1, 7, 37, 259, 3929, 21611, 27503, 145373, 151277, 799607, 1017611, 5597249, 84909619, 594367333, 3141655903, 21991591321]

約数ペア:

[(1, 21991591321), (7, 3141655903), (37, 594367333), (259, 84909619), (3929, 5597249), (21611, 1017611), (27503, 799607), (145373, 151277)]