20469800

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7873}}^1$

素因数の和:7902

約数の個数: 48

約数和(自身を含む): 51259740

約数和(自身を除く): 30789940

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 7873, 15746, 31492, 39365, 62984, 78730, 102349, 157460, 196825, 204698, 314920, 393650, 409396, 511745, 787300, 818792, 1023490, 1574600, 2046980, 2558725, 4093960, 5117450, 10234900, 20469800]

約数ペア:

[(1, 20469800), (2, 10234900), (4, 5117450), (5, 4093960), (8, 2558725), (10, 2046980), (13, 1574600), (20, 1023490), (25, 818792), (26, 787300), (40, 511745), (50, 409396), (52, 393650), (65, 314920), (100, 204698), (104, 196825), (130, 157460), (200, 102349), (260, 78730), (325, 62984), (520, 39365), (650, 31492), (1300, 15746), (2600, 7873)]