210021520

素因数分解:

$2^4\times 5^1\times {\mathrm{563}}^1\times {\mathrm{4663}}^1$

素因数の和:5239

約数の個数: 40

約数和(自身を含む): 489272256

約数和(自身を除く): 279250736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 563, 1126, 2252, 2815, 4504, 4663, 5630, 9008, 9326, 11260, 18652, 22520, 23315, 37304, 45040, 46630, 74608, 93260, 186520, 373040, 2625269, 5250538, 10501076, 13126345, 21002152, 26252690, 42004304, 52505380, 105010760, 210021520]

約数ペア:

[(1, 210021520), (2, 105010760), (4, 52505380), (5, 42004304), (8, 26252690), (10, 21002152), (16, 13126345), (20, 10501076), (40, 5250538), (80, 2625269), (563, 373040), (1126, 186520), (2252, 93260), (2815, 74608), (4504, 46630), (4663, 45040), (5630, 37304), (9008, 23315), (9326, 22520), (11260, 18652)]