21928705

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1\times {\mathrm{277}}^1$

素因数の和:576

約数の個数: 16

約数和(自身を含む): 26901504

約数和(自身を除く): 4972799

約数列:

[1, 5, 71, 223, 277, 355, 1115, 1385, 15833, 19667, 61771, 79165, 98335, 308855, 4385741, 21928705]

約数ペア:

[(1, 21928705), (5, 4385741), (71, 308855), (223, 98335), (277, 79165), (355, 61771), (1115, 19667), (1385, 15833)]