20915500

素因数分解:

$2^2\times 5^3\times {\mathrm{59}}^1\times {\mathrm{709}}^1$

素因数の和:787

約数の個数: 48

約数和(自身を含む): 46519200

約数和(自身を除く): 25603700

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 59, 100, 118, 125, 236, 250, 295, 500, 590, 709, 1180, 1418, 1475, 2836, 2950, 3545, 5900, 7090, 7375, 14180, 14750, 17725, 29500, 35450, 41831, 70900, 83662, 88625, 167324, 177250, 209155, 354500, 418310, 836620, 1045775, 2091550, 4183100, 5228875, 10457750, 20915500]

約数ペア:

[(1, 20915500), (2, 10457750), (4, 5228875), (5, 4183100), (10, 2091550), (20, 1045775), (25, 836620), (50, 418310), (59, 354500), (100, 209155), (118, 177250), (125, 167324), (236, 88625), (250, 83662), (295, 70900), (500, 41831), (590, 35450), (709, 29500), (1180, 17725), (1418, 14750), (1475, 14180), (2836, 7375), (2950, 7090), (3545, 5900)]