20881798

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2707}}^1$

素因数の和:2764

約数の個数: 32

約数和(自身を含む): 38995200

約数和(自身を除く): 18113402

約数列:

[1, 2, 7, 14, 19, 29, 38, 58, 133, 203, 266, 406, 551, 1102, 2707, 3857, 5414, 7714, 18949, 37898, 51433, 78503, 102866, 157006, 360031, 549521, 720062, 1099042, 1491557, 2983114, 10440899, 20881798]

約数ペア:

[(1, 20881798), (2, 10440899), (7, 2983114), (14, 1491557), (19, 1099042), (29, 720062), (38, 549521), (58, 360031), (133, 157006), (203, 102866), (266, 78503), (406, 51433), (551, 37898), (1102, 18949), (2707, 7714), (3857, 5414)]