20931575

素因数分解:

$5^2\times 7^3\times {\mathrm{2441}}^1$

素因数の和:2472

約数の個数: 24

約数和(自身を含む): 30280800

約数和(自身を除く): 9349225

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 343, 1225, 1715, 2441, 8575, 12205, 17087, 61025, 85435, 119609, 427175, 598045, 837263, 2990225, 4186315, 20931575]

約数ペア:

[(1, 20931575), (5, 4186315), (7, 2990225), (25, 837263), (35, 598045), (49, 427175), (175, 119609), (245, 85435), (343, 61025), (1225, 17087), (1715, 12205), (2441, 8575)]