20684075

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{271}}^1$

素因数の和:395

約数の個数: 24

約数和(自身を含む): 26712576

約数和(自身を除く): 6028501

約数列:

[1, 5, 25, 43, 71, 215, 271, 355, 1075, 1355, 1775, 3053, 6775, 11653, 15265, 19241, 58265, 76325, 96205, 291325, 481025, 827363, 4136815, 20684075]

約数ペア:

[(1, 20684075), (5, 4136815), (25, 827363), (43, 481025), (71, 291325), (215, 96205), (271, 76325), (355, 58265), (1075, 19241), (1355, 15265), (1775, 11653), (3053, 6775)]