20652280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{251}}^1$

素因数の和:301

約数の個数: 96

約数和(自身を含む): 54295920

約数和(自身を除く): 33643640

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 121, 136, 170, 187, 220, 242, 251, 340, 374, 440, 484, 502, 605, 680, 748, 935, 968, 1004, 1210, 1255, 1496, 1870, 2008, 2057, 2420, 2510, 2761, 3740, 4114, 4267, 4840, 5020, 5522, 7480, 8228, 8534, 10040, 10285, 11044, 13805, 16456, 17068, 20570, 21335, 22088, 27610, 30371, 34136, 41140, 42670, 46937, 55220, 60742, 82280, 85340, 93874, 110440, 121484, 151855, 170680, 187748, 234685, 242968, 303710, 375496, 469370, 516307, 607420, 938740, 1032614, 1214840, 1877480, 2065228, 2581535, 4130456, 5163070, 10326140, 20652280]

約数ペア:

[(1, 20652280), (2, 10326140), (4, 5163070), (5, 4130456), (8, 2581535), (10, 2065228), (11, 1877480), (17, 1214840), (20, 1032614), (22, 938740), (34, 607420), (40, 516307), (44, 469370), (55, 375496), (68, 303710), (85, 242968), (88, 234685), (110, 187748), (121, 170680), (136, 151855), (170, 121484), (187, 110440), (220, 93874), (242, 85340), (251, 82280), (340, 60742), (374, 55220), (440, 46937), (484, 42670), (502, 41140), (605, 34136), (680, 30371), (748, 27610), (935, 22088), (968, 21335), (1004, 20570), (1210, 17068), (1255, 16456), (1496, 13805), (1870, 11044), (2008, 10285), (2057, 10040), (2420, 8534), (2510, 8228), (2761, 7480), (3740, 5522), (4114, 5020), (4267, 4840)]