21002080

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11933}}^1$

素因数の和:11959

約数の個数: 48

約数和(自身を含む): 54132624

約数和(自身を除く): 33130544

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11933, 23866, 47732, 59665, 95464, 119330, 131263, 190928, 238660, 262526, 381856, 477320, 525052, 656315, 954640, 1050104, 1312630, 1909280, 2100208, 2625260, 4200416, 5250520, 10501040, 21002080]

約数ペア:

[(1, 21002080), (2, 10501040), (4, 5250520), (5, 4200416), (8, 2625260), (10, 2100208), (11, 1909280), (16, 1312630), (20, 1050104), (22, 954640), (32, 656315), (40, 525052), (44, 477320), (55, 381856), (80, 262526), (88, 238660), (110, 190928), (160, 131263), (176, 119330), (220, 95464), (352, 59665), (440, 47732), (880, 23866), (1760, 11933)]