20187890

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{18521}}^1$

素因数の和:18637

約数の個数: 16

約数和(自身を含む): 36673560

約数和(自身を除く): 16485670

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 18521, 37042, 92605, 185210, 2018789, 4037578, 10093945, 20187890]

約数ペア:

[(1, 20187890), (2, 10093945), (5, 4037578), (10, 2018789), (109, 185210), (218, 92605), (545, 37042), (1090, 18521)]