20495276

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{57571}}^1$

素因数の和:57664

約数の個数: 12

約数和(自身を含む): 36270360

約数和(自身を除く): 15775084

約数列:

[1, 2, 4, 89, 178, 356, 57571, 115142, 230284, 5123819, 10247638, 20495276]

約数ペア:

[(1, 20495276), (2, 10247638), (4, 5123819), (89, 230284), (178, 115142), (356, 57571)]