21831980

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{4349}}^1$

素因数の和:4609

約数の個数: 24

約数和(自身を含む): 46040400

約数和(自身を除く): 24208420

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 4349, 5020, 8698, 17396, 21745, 43490, 86980, 1091599, 2183198, 4366396, 5457995, 10915990, 21831980]

約数ペア:

[(1, 21831980), (2, 10915990), (4, 5457995), (5, 4366396), (10, 2183198), (20, 1091599), (251, 86980), (502, 43490), (1004, 21745), (1255, 17396), (2510, 8698), (4349, 5020)]