20784590

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71671}}^1$

素因数の和:71707

約数の個数: 16

約数和(自身を含む): 38702880

約数和(自身を除く): 17918290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 71671, 143342, 358355, 716710, 2078459, 4156918, 10392295, 20784590]

約数ペア:

[(1, 20784590), (2, 10392295), (5, 4156918), (10, 2078459), (29, 716710), (58, 358355), (145, 143342), (290, 71671)]