20205895

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{331}}^1\times {\mathrm{421}}^1$

素因数の和:786

約数の個数: 16

約数和(自身を含む): 25218720

約数和(自身を除く): 5012825

約数列:

[1, 5, 29, 145, 331, 421, 1655, 2105, 9599, 12209, 47995, 61045, 139351, 696755, 4041179, 20205895]

約数ペア:

[(1, 20205895), (5, 4041179), (29, 696755), (145, 139351), (331, 61045), (421, 47995), (1655, 12209), (2105, 9599)]