21302575

素因数分解:

$5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{2969}}^1$

素因数の和:3027

約数の個数: 24

約数和(自身を含む): 30935520

約数和(自身を除く): 9632945

約数列:

[1, 5, 7, 25, 35, 41, 175, 205, 287, 1025, 1435, 2969, 7175, 14845, 20783, 74225, 103915, 121729, 519575, 608645, 852103, 3043225, 4260515, 21302575]

約数ペア:

[(1, 21302575), (5, 4260515), (7, 3043225), (25, 852103), (35, 608645), (41, 519575), (175, 121729), (205, 103915), (287, 74225), (1025, 20783), (1435, 14845), (2969, 7175)]