21907988

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{2551}}^1$

素因数の和:2687

約数の個数: 24

約数和(自身を含む): 40729920

約数和(自身を除く): 18821932

約数列:

[1, 2, 4, 19, 38, 76, 113, 226, 452, 2147, 2551, 4294, 5102, 8588, 10204, 48469, 96938, 193876, 288263, 576526, 1153052, 5476997, 10953994, 21907988]

約数ペア:

[(1, 21907988), (2, 10953994), (4, 5476997), (19, 1153052), (38, 576526), (76, 288263), (113, 193876), (226, 96938), (452, 48469), (2147, 10204), (2551, 8588), (4294, 5102)]