20451695

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{19571}}^1$

素因数の和:19606

約数の個数: 16

約数和(自身を含む): 28183680

約数和(自身を除く): 7731985

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 19571, 97855, 215281, 371849, 1076405, 1859245, 4090339, 20451695]

約数ペア:

[(1, 20451695), (5, 4090339), (11, 1859245), (19, 1076405), (55, 371849), (95, 215281), (209, 97855), (1045, 19571)]