21973315

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{6899}}^1$

素因数の和:6931

約数の個数: 24

約数和(自身を含む): 33037200

約数和(自身を除く): 11063885

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 3185, 6899, 34495, 48293, 89687, 241465, 338051, 448435, 627809, 1690255, 3139045, 4394663, 21973315]

約数ペア:

[(1, 21973315), (5, 4394663), (7, 3139045), (13, 1690255), (35, 627809), (49, 448435), (65, 338051), (91, 241465), (245, 89687), (455, 48293), (637, 34495), (3185, 6899)]