2151250

素因数分解:

$2^1\times 5^4\times {\mathrm{1721}}^1$

素因数の和:1743

約数の個数: 20

約数和(自身を含む): 4034646

約数和(自身を除く): 1883396

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 1250, 1721, 3442, 8605, 17210, 43025, 86050, 215125, 430250, 1075625, 2151250]

約数ペア:

[(1, 2151250), (2, 1075625), (5, 430250), (10, 215125), (25, 86050), (50, 43025), (125, 17210), (250, 8605), (625, 3442), (1250, 1721)]