20803000

素因数分解:

$2^3\times 5^3\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:385

約数の個数: 64

約数和(自身を含む): 49533120

約数和(自身を除く): 28730120

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 71, 100, 125, 142, 200, 250, 284, 293, 355, 500, 568, 586, 710, 1000, 1172, 1420, 1465, 1775, 2344, 2840, 2930, 3550, 5860, 7100, 7325, 8875, 11720, 14200, 14650, 17750, 20803, 29300, 35500, 36625, 41606, 58600, 71000, 73250, 83212, 104015, 146500, 166424, 208030, 293000, 416060, 520075, 832120, 1040150, 2080300, 2600375, 4160600, 5200750, 10401500, 20803000]

約数ペア:

[(1, 20803000), (2, 10401500), (4, 5200750), (5, 4160600), (8, 2600375), (10, 2080300), (20, 1040150), (25, 832120), (40, 520075), (50, 416060), (71, 293000), (100, 208030), (125, 166424), (142, 146500), (200, 104015), (250, 83212), (284, 73250), (293, 71000), (355, 58600), (500, 41606), (568, 36625), (586, 35500), (710, 29300), (1000, 20803), (1172, 17750), (1420, 14650), (1465, 14200), (1775, 11720), (2344, 8875), (2840, 7325), (2930, 7100), (3550, 5860)]