2181520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:128

約数の個数: 80

約数和(自身を含む): 5767488

約数和(自身を除く): 3585968

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 37, 40, 44, 55, 67, 74, 80, 88, 110, 134, 148, 176, 185, 220, 268, 296, 335, 370, 407, 440, 536, 592, 670, 737, 740, 814, 880, 1072, 1340, 1474, 1480, 1628, 2035, 2479, 2680, 2948, 2960, 3256, 3685, 4070, 4958, 5360, 5896, 6512, 7370, 8140, 9916, 11792, 12395, 14740, 16280, 19832, 24790, 27269, 29480, 32560, 39664, 49580, 54538, 58960, 99160, 109076, 136345, 198320, 218152, 272690, 436304, 545380, 1090760, 2181520]

約数ペア:

[(1, 2181520), (2, 1090760), (4, 545380), (5, 436304), (8, 272690), (10, 218152), (11, 198320), (16, 136345), (20, 109076), (22, 99160), (37, 58960), (40, 54538), (44, 49580), (55, 39664), (67, 32560), (74, 29480), (80, 27269), (88, 24790), (110, 19832), (134, 16280), (148, 14740), (176, 12395), (185, 11792), (220, 9916), (268, 8140), (296, 7370), (335, 6512), (370, 5896), (407, 5360), (440, 4958), (536, 4070), (592, 3685), (670, 3256), (737, 2960), (740, 2948), (814, 2680), (880, 2479), (1072, 2035), (1340, 1628), (1474, 1480)]