20554352

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{743}}^1$

素因数の和:790

約数の個数: 80

約数和(自身を含む): 51663360

約数和(自身を除く): 31109008

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 38, 52, 56, 76, 91, 104, 112, 133, 152, 182, 208, 247, 266, 304, 364, 494, 532, 728, 743, 988, 1064, 1456, 1486, 1729, 1976, 2128, 2972, 3458, 3952, 5201, 5944, 6916, 9659, 10402, 11888, 13832, 14117, 19318, 20804, 27664, 28234, 38636, 41608, 56468, 67613, 77272, 83216, 98819, 112936, 135226, 154544, 183521, 197638, 225872, 270452, 367042, 395276, 540904, 734084, 790552, 1081808, 1284647, 1468168, 1581104, 2569294, 2936336, 5138588, 10277176, 20554352]

約数ペア:

[(1, 20554352), (2, 10277176), (4, 5138588), (7, 2936336), (8, 2569294), (13, 1581104), (14, 1468168), (16, 1284647), (19, 1081808), (26, 790552), (28, 734084), (38, 540904), (52, 395276), (56, 367042), (76, 270452), (91, 225872), (104, 197638), (112, 183521), (133, 154544), (152, 135226), (182, 112936), (208, 98819), (247, 83216), (266, 77272), (304, 67613), (364, 56468), (494, 41608), (532, 38636), (728, 28234), (743, 27664), (988, 20804), (1064, 19318), (1456, 14117), (1486, 13832), (1729, 11888), (1976, 10402), (2128, 9659), (2972, 6916), (3458, 5944), (3952, 5201)]