20907546

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 26992614

約数列:

[1, 2, 3, 6, 11, 22, 33, 43, 53, 66, 86, 106, 129, 139, 159, 258, 278, 318, 417, 473, 583, 834, 946, 1166, 1419, 1529, 1749, 2279, 2838, 3058, 3498, 4558, 4587, 5977, 6837, 7367, 9174, 11954, 13674, 14734, 17931, 22101, 25069, 35862, 44202, 50138, 65747, 75207, 81037, 131494, 150414, 162074, 197241, 243111, 316781, 394482, 486222, 633562, 950343, 1900686, 3484591, 6969182, 10453773, 20907546]

約数ペア:

[(1, 20907546), (2, 10453773), (3, 6969182), (6, 3484591), (11, 1900686), (22, 950343), (33, 633562), (43, 486222), (53, 394482), (66, 316781), (86, 243111), (106, 197241), (129, 162074), (139, 150414), (159, 131494), (258, 81037), (278, 75207), (318, 65747), (417, 50138), (473, 44202), (583, 35862), (834, 25069), (946, 22101), (1166, 17931), (1419, 14734), (1529, 13674), (1749, 11954), (2279, 9174), (2838, 7367), (3058, 6837), (3498, 5977), (4558, 4587)]