21535549

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{251}}^1$

素因数の和:385

約数の個数: 24

約数和(自身を含む): 26889408

約数和(自身を除く): 5353859

約数列:

[1, 7, 17, 49, 103, 119, 251, 721, 833, 1751, 1757, 4267, 5047, 12257, 12299, 25853, 29869, 85799, 180971, 209083, 439501, 1266797, 3076507, 21535549]

約数ペア:

[(1, 21535549), (7, 3076507), (17, 1266797), (49, 439501), (103, 209083), (119, 180971), (251, 85799), (721, 29869), (833, 25853), (1751, 12299), (1757, 12257), (4267, 5047)]