999875

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{421}}^1$

素因数の和:455

約数の個数: 16

約数和(自身を含む): 1316640

約数和(自身を除く): 316765

約数列:

[1, 5, 19, 25, 95, 125, 421, 475, 2105, 2375, 7999, 10525, 39995, 52625, 199975, 999875]

約数ペア:

[(1, 999875), (5, 199975), (19, 52625), (25, 39995), (95, 10525), (125, 7999), (421, 2375), (475, 2105)]