21139980275

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{191}}^1\times {\mathrm{107981}}^1$

素因数の和:108223

約数の個数: 24

約数和(自身を含む): 26993772288

約数和(自身を除く): 5853792013

約数列:

[1, 5, 25, 41, 191, 205, 955, 1025, 4775, 7831, 39155, 107981, 195775, 539905, 2699525, 4427221, 20624371, 22136105, 103121855, 110680525, 515609275, 845599211, 4227996055, 21139980275]

約数ペア:

[(1, 21139980275), (5, 4227996055), (25, 845599211), (41, 515609275), (191, 110680525), (205, 103121855), (955, 22136105), (1025, 20624371), (4775, 4427221), (7831, 2699525), (39155, 539905), (107981, 195775)]