21812705

素因数分解:

$5^1\times {\mathrm{151}}^1\times {\mathrm{167}}^1\times {\mathrm{173}}^1$

素因数の和:496

約数の個数: 16

約数和(自身を含む): 26659584

約数和(自身を除く): 4846879

約数列:

[1, 5, 151, 167, 173, 755, 835, 865, 25217, 26123, 28891, 126085, 130615, 144455, 4362541, 21812705]

約数ペア:

[(1, 21812705), (5, 4362541), (151, 144455), (167, 130615), (173, 126085), (755, 28891), (835, 26123), (865, 25217)]