21988560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{8329}}^1$

素因数の和:8356

約数の個数: 80

約数和(自身を含む): 74370240

約数和(自身を除く): 52381680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 220, 240, 264, 330, 440, 528, 660, 880, 1320, 2640, 8329, 16658, 24987, 33316, 41645, 49974, 66632, 83290, 91619, 99948, 124935, 133264, 166580, 183238, 199896, 249870, 274857, 333160, 366476, 399792, 458095, 499740, 549714, 666320, 732952, 916190, 999480, 1099428, 1374285, 1465904, 1832380, 1998960, 2198856, 2748570, 3664760, 4397712, 5497140, 7329520, 10994280, 21988560]

約数ペア:

[(1, 21988560), (2, 10994280), (3, 7329520), (4, 5497140), (5, 4397712), (6, 3664760), (8, 2748570), (10, 2198856), (11, 1998960), (12, 1832380), (15, 1465904), (16, 1374285), (20, 1099428), (22, 999480), (24, 916190), (30, 732952), (33, 666320), (40, 549714), (44, 499740), (48, 458095), (55, 399792), (60, 366476), (66, 333160), (80, 274857), (88, 249870), (110, 199896), (120, 183238), (132, 166580), (165, 133264), (176, 124935), (220, 99948), (240, 91619), (264, 83290), (330, 66632), (440, 49974), (528, 41645), (660, 33316), (880, 24987), (1320, 16658), (2640, 8329)]