21147280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3433}}^1$

素因数の和:3464

約数の個数: 80

約数和(自身を含む): 61317504

約数和(自身を除く): 40170224

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 3433, 6160, 6866, 13732, 17165, 24031, 27464, 34330, 37763, 48062, 54928, 68660, 75526, 96124, 120155, 137320, 151052, 188815, 192248, 240310, 264341, 274640, 302104, 377630, 384496, 480620, 528682, 604208, 755260, 961240, 1057364, 1321705, 1510520, 1922480, 2114728, 2643410, 3021040, 4229456, 5286820, 10573640, 21147280]

約数ペア:

[(1, 21147280), (2, 10573640), (4, 5286820), (5, 4229456), (7, 3021040), (8, 2643410), (10, 2114728), (11, 1922480), (14, 1510520), (16, 1321705), (20, 1057364), (22, 961240), (28, 755260), (35, 604208), (40, 528682), (44, 480620), (55, 384496), (56, 377630), (70, 302104), (77, 274640), (80, 264341), (88, 240310), (110, 192248), (112, 188815), (140, 151052), (154, 137320), (176, 120155), (220, 96124), (280, 75526), (308, 68660), (385, 54928), (440, 48062), (560, 37763), (616, 34330), (770, 27464), (880, 24031), (1232, 17165), (1540, 13732), (3080, 6866), (3433, 6160)]