20527280

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{4349}}^1$

素因数の和:4421

約数の個数: 40

約数和(自身を含む): 48546000

約数和(自身を除く): 28018720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360, 4349, 4720, 8698, 17396, 21745, 34792, 43490, 69584, 86980, 173960, 256591, 347920, 513182, 1026364, 1282955, 2052728, 2565910, 4105456, 5131820, 10263640, 20527280]

約数ペア:

[(1, 20527280), (2, 10263640), (4, 5131820), (5, 4105456), (8, 2565910), (10, 2052728), (16, 1282955), (20, 1026364), (40, 513182), (59, 347920), (80, 256591), (118, 173960), (236, 86980), (295, 69584), (472, 43490), (590, 34792), (944, 21745), (1180, 17396), (2360, 8698), (4349, 4720)]