21566000

素因数分解:

$2^4\times 5^3\times {\mathrm{41}}^1\times {\mathrm{263}}^1$

素因数の和:327

約数の個数: 80

約数和(自身を含む): 53621568

約数和(自身を除く): 32055568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 41, 50, 80, 82, 100, 125, 164, 200, 205, 250, 263, 328, 400, 410, 500, 526, 656, 820, 1000, 1025, 1052, 1315, 1640, 2000, 2050, 2104, 2630, 3280, 4100, 4208, 5125, 5260, 6575, 8200, 10250, 10520, 10783, 13150, 16400, 20500, 21040, 21566, 26300, 32875, 41000, 43132, 52600, 53915, 65750, 82000, 86264, 105200, 107830, 131500, 172528, 215660, 263000, 269575, 431320, 526000, 539150, 862640, 1078300, 1347875, 2156600, 2695750, 4313200, 5391500, 10783000, 21566000]

約数ペア:

[(1, 21566000), (2, 10783000), (4, 5391500), (5, 4313200), (8, 2695750), (10, 2156600), (16, 1347875), (20, 1078300), (25, 862640), (40, 539150), (41, 526000), (50, 431320), (80, 269575), (82, 263000), (100, 215660), (125, 172528), (164, 131500), (200, 107830), (205, 105200), (250, 86264), (263, 82000), (328, 65750), (400, 53915), (410, 52600), (500, 43132), (526, 41000), (656, 32875), (820, 26300), (1000, 21566), (1025, 21040), (1052, 20500), (1315, 16400), (1640, 13150), (2000, 10783), (2050, 10520), (2104, 10250), (2630, 8200), (3280, 6575), (4100, 5260), (4208, 5125)]