20831000

素因数分解:

$2^3\times 5^3\times {\mathrm{37}}^1\times {\mathrm{563}}^1$

素因数の和:621

約数の個数: 64

約数和(自身を含む): 50150880

約数和(自身を除く): 29319880

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 37, 40, 50, 74, 100, 125, 148, 185, 200, 250, 296, 370, 500, 563, 740, 925, 1000, 1126, 1480, 1850, 2252, 2815, 3700, 4504, 4625, 5630, 7400, 9250, 11260, 14075, 18500, 20831, 22520, 28150, 37000, 41662, 56300, 70375, 83324, 104155, 112600, 140750, 166648, 208310, 281500, 416620, 520775, 563000, 833240, 1041550, 2083100, 2603875, 4166200, 5207750, 10415500, 20831000]

約数ペア:

[(1, 20831000), (2, 10415500), (4, 5207750), (5, 4166200), (8, 2603875), (10, 2083100), (20, 1041550), (25, 833240), (37, 563000), (40, 520775), (50, 416620), (74, 281500), (100, 208310), (125, 166648), (148, 140750), (185, 112600), (200, 104155), (250, 83324), (296, 70375), (370, 56300), (500, 41662), (563, 37000), (740, 28150), (925, 22520), (1000, 20831), (1126, 18500), (1480, 14075), (1850, 11260), (2252, 9250), (2815, 7400), (3700, 5630), (4504, 4625)]