21317900

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{7351}}^1$

素因数の和:7394

約数の個数: 36

約数和(自身を含む): 47861520

約数和(自身を除く): 26543620

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 145, 290, 580, 725, 1450, 2900, 7351, 14702, 29404, 36755, 73510, 147020, 183775, 213179, 367550, 426358, 735100, 852716, 1065895, 2131790, 4263580, 5329475, 10658950, 21317900]

約数ペア:

[(1, 21317900), (2, 10658950), (4, 5329475), (5, 4263580), (10, 2131790), (20, 1065895), (25, 852716), (29, 735100), (50, 426358), (58, 367550), (100, 213179), (116, 183775), (145, 147020), (290, 73510), (580, 36755), (725, 29404), (1450, 14702), (2900, 7351)]