20690420

素因数分解:

$2^2\times 5^1\times {\mathrm{727}}^1\times {\mathrm{1423}}^1$

素因数の和:2159

約数の個数: 24

約数和(自身を含む): 43540224

約数和(自身を除く): 22849804

約数列:

[1, 2, 4, 5, 10, 20, 727, 1423, 1454, 2846, 2908, 3635, 5692, 7115, 7270, 14230, 14540, 28460, 1034521, 2069042, 4138084, 5172605, 10345210, 20690420]

約数ペア:

[(1, 20690420), (2, 10345210), (4, 5172605), (5, 4138084), (10, 2069042), (20, 1034521), (727, 28460), (1423, 14540), (1454, 14230), (2846, 7270), (2908, 7115), (3635, 5692)]