21860425

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{421}}^1$

素因数の和:529

約数の個数: 24

約数和(自身を含む): 28466432

約数和(自身を除く): 6606007

約数列:

[1, 5, 25, 31, 67, 155, 335, 421, 775, 1675, 2077, 2105, 10385, 10525, 13051, 28207, 51925, 65255, 141035, 326275, 705175, 874417, 4372085, 21860425]

約数ペア:

[(1, 21860425), (5, 4372085), (25, 874417), (31, 705175), (67, 326275), (155, 141035), (335, 65255), (421, 51925), (775, 28207), (1675, 13051), (2077, 10525), (2105, 10385)]