21258276

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:213

約数の個数: 96

約数和(自身を含む): 57200640

約数和(自身を除く): 35942364

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 29, 37, 39, 52, 58, 74, 78, 87, 111, 116, 127, 148, 156, 174, 222, 254, 348, 377, 381, 444, 481, 508, 754, 762, 962, 1073, 1131, 1443, 1508, 1524, 1651, 1924, 2146, 2262, 2886, 3219, 3302, 3683, 4292, 4524, 4699, 4953, 5772, 6438, 6604, 7366, 9398, 9906, 11049, 12876, 13949, 14097, 14732, 18796, 19812, 22098, 27898, 28194, 41847, 44196, 47879, 55796, 56388, 61087, 83694, 95758, 122174, 136271, 143637, 167388, 183261, 191516, 244348, 272542, 287274, 366522, 408813, 545084, 574548, 733044, 817626, 1635252, 1771523, 3543046, 5314569, 7086092, 10629138, 21258276]

約数ペア:

[(1, 21258276), (2, 10629138), (3, 7086092), (4, 5314569), (6, 3543046), (12, 1771523), (13, 1635252), (26, 817626), (29, 733044), (37, 574548), (39, 545084), (52, 408813), (58, 366522), (74, 287274), (78, 272542), (87, 244348), (111, 191516), (116, 183261), (127, 167388), (148, 143637), (156, 136271), (174, 122174), (222, 95758), (254, 83694), (348, 61087), (377, 56388), (381, 55796), (444, 47879), (481, 44196), (508, 41847), (754, 28194), (762, 27898), (962, 22098), (1073, 19812), (1131, 18796), (1443, 14732), (1508, 14097), (1524, 13949), (1651, 12876), (1924, 11049), (2146, 9906), (2262, 9398), (2886, 7366), (3219, 6604), (3302, 6438), (3683, 5772), (4292, 4953), (4524, 4699)]