21052000

素因数分解:

$2^5\times 5^3\times {\mathrm{19}}^1\times {\mathrm{277}}^1$

素因数の和:321

約数の個数: 96

約数和(自身を含む): 54643680

約数和(自身を除く): 33591680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 76, 80, 95, 100, 125, 152, 160, 190, 200, 250, 277, 304, 380, 400, 475, 500, 554, 608, 760, 800, 950, 1000, 1108, 1385, 1520, 1900, 2000, 2216, 2375, 2770, 3040, 3800, 4000, 4432, 4750, 5263, 5540, 6925, 7600, 8864, 9500, 10526, 11080, 13850, 15200, 19000, 21052, 22160, 26315, 27700, 34625, 38000, 42104, 44320, 52630, 55400, 69250, 76000, 84208, 105260, 110800, 131575, 138500, 168416, 210520, 221600, 263150, 277000, 421040, 526300, 554000, 657875, 842080, 1052600, 1108000, 1315750, 2105200, 2631500, 4210400, 5263000, 10526000, 21052000]

約数ペア:

[(1, 21052000), (2, 10526000), (4, 5263000), (5, 4210400), (8, 2631500), (10, 2105200), (16, 1315750), (19, 1108000), (20, 1052600), (25, 842080), (32, 657875), (38, 554000), (40, 526300), (50, 421040), (76, 277000), (80, 263150), (95, 221600), (100, 210520), (125, 168416), (152, 138500), (160, 131575), (190, 110800), (200, 105260), (250, 84208), (277, 76000), (304, 69250), (380, 55400), (400, 52630), (475, 44320), (500, 42104), (554, 38000), (608, 34625), (760, 27700), (800, 26315), (950, 22160), (1000, 21052), (1108, 19000), (1385, 15200), (1520, 13850), (1900, 11080), (2000, 10526), (2216, 9500), (2375, 8864), (2770, 7600), (3040, 6925), (3800, 5540), (4000, 5263), (4432, 4750)]