21377375

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{9001}}^1$

素因数の和:9035

約数の個数: 16

約数和(自身を含む): 28086240

約数和(自身を除く): 6708865

約数列:

[1, 5, 19, 25, 95, 125, 475, 2375, 9001, 45005, 171019, 225025, 855095, 1125125, 4275475, 21377375]

約数ペア:

[(1, 21377375), (5, 4275475), (19, 1125125), (25, 855095), (95, 225025), (125, 171019), (475, 45005), (2375, 9001)]