28120456

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{107}}^1$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 69128640

約数和(自身を除く): 41008184

約数列:

[1, 2, 4, 7, 8, 13, 14, 19, 26, 28, 38, 52, 56, 76, 91, 104, 107, 133, 152, 182, 214, 247, 266, 361, 364, 428, 494, 532, 722, 728, 749, 856, 988, 1064, 1391, 1444, 1498, 1729, 1976, 2033, 2527, 2782, 2888, 2996, 3458, 4066, 4693, 5054, 5564, 5992, 6916, 8132, 9386, 9737, 10108, 11128, 13832, 14231, 16264, 18772, 19474, 20216, 26429, 28462, 32851, 37544, 38627, 38948, 52858, 56924, 65702, 77254, 77896, 105716, 113848, 131404, 154508, 185003, 211432, 262808, 270389, 309016, 370006, 502151, 540778, 740012, 1004302, 1081556, 1480024, 2008604, 2163112, 3515057, 4017208, 7030114, 14060228, 28120456]

約数ペア:

[(1, 28120456), (2, 14060228), (4, 7030114), (7, 4017208), (8, 3515057), (13, 2163112), (14, 2008604), (19, 1480024), (26, 1081556), (28, 1004302), (38, 740012), (52, 540778), (56, 502151), (76, 370006), (91, 309016), (104, 270389), (107, 262808), (133, 211432), (152, 185003), (182, 154508), (214, 131404), (247, 113848), (266, 105716), (361, 77896), (364, 77254), (428, 65702), (494, 56924), (532, 52858), (722, 38948), (728, 38627), (749, 37544), (856, 32851), (988, 28462), (1064, 26429), (1391, 20216), (1444, 19474), (1498, 18772), (1729, 16264), (1976, 14231), (2033, 13832), (2527, 11128), (2782, 10108), (2888, 9737), (2996, 9386), (3458, 8132), (4066, 6916), (4693, 5992), (5054, 5564)]