19801108

素因数分解:

$2^2\times {\mathrm{59}}^1\times {\mathrm{83903}}^1$

素因数の和:83966

約数の個数: 12

約数和(自身を含む): 35239680

約数和(自身を除く): 15438572

約数列:

[1, 2, 4, 59, 118, 236, 83903, 167806, 335612, 4950277, 9900554, 19801108]

約数ペア:

[(1, 19801108), (2, 9900554), (4, 4950277), (59, 335612), (118, 167806), (236, 83903)]