19765540

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{3517}}^1$

素因数の和:3807

約数の個数: 24

約数和(自身を含む): 41667192

約数和(自身を除く): 21901652

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2810, 3517, 5620, 7034, 14068, 17585, 35170, 70340, 988277, 1976554, 3953108, 4941385, 9882770, 19765540]

約数ペア:

[(1, 19765540), (2, 9882770), (4, 4941385), (5, 3953108), (10, 1976554), (20, 988277), (281, 70340), (562, 35170), (1124, 17585), (1405, 14068), (2810, 7034), (3517, 5620)]