21987892

素因数分解:

$2^2\times {\mathrm{73}}^1\times {\mathrm{257}}^1\times {\mathrm{293}}^1$

素因数の和:627

約数の個数: 24

約数和(自身を含む): 39291336

約数和(自身を除く): 17303444

約数列:

[1, 2, 4, 73, 146, 257, 292, 293, 514, 586, 1028, 1172, 18761, 21389, 37522, 42778, 75044, 75301, 85556, 150602, 301204, 5496973, 10993946, 21987892]

約数ペア:

[(1, 21987892), (2, 10993946), (4, 5496973), (73, 301204), (146, 150602), (257, 85556), (292, 75301), (293, 75044), (514, 42778), (586, 37522), (1028, 21389), (1172, 18761)]