20839728

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{367}}^1$

素因数の和:411

約数の個数: 120

約数和(自身を含む): 66805248

約数和(自身を除く): 45965520

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 16, 21, 24, 26, 28, 39, 42, 48, 52, 56, 78, 84, 91, 104, 112, 156, 168, 169, 182, 208, 273, 312, 336, 338, 364, 367, 507, 546, 624, 676, 728, 734, 1014, 1092, 1101, 1183, 1352, 1456, 1468, 2028, 2184, 2202, 2366, 2569, 2704, 2936, 3549, 4056, 4368, 4404, 4732, 4771, 5138, 5872, 7098, 7707, 8112, 8808, 9464, 9542, 10276, 14196, 14313, 15414, 17616, 18928, 19084, 20552, 28392, 28626, 30828, 33397, 38168, 41104, 56784, 57252, 61656, 62023, 66794, 76336, 100191, 114504, 123312, 124046, 133588, 186069, 200382, 229008, 248092, 267176, 372138, 400764, 434161, 496184, 534352, 744276, 801528, 868322, 992368, 1302483, 1488552, 1603056, 1736644, 2604966, 2977104, 3473288, 5209932, 6946576, 10419864, 20839728]

約数ペア:

[(1, 20839728), (2, 10419864), (3, 6946576), (4, 5209932), (6, 3473288), (7, 2977104), (8, 2604966), (12, 1736644), (13, 1603056), (14, 1488552), (16, 1302483), (21, 992368), (24, 868322), (26, 801528), (28, 744276), (39, 534352), (42, 496184), (48, 434161), (52, 400764), (56, 372138), (78, 267176), (84, 248092), (91, 229008), (104, 200382), (112, 186069), (156, 133588), (168, 124046), (169, 123312), (182, 114504), (208, 100191), (273, 76336), (312, 66794), (336, 62023), (338, 61656), (364, 57252), (367, 56784), (507, 41104), (546, 38168), (624, 33397), (676, 30828), (728, 28626), (734, 28392), (1014, 20552), (1092, 19084), (1101, 18928), (1183, 17616), (1352, 15414), (1456, 14313), (1468, 14196), (2028, 10276), (2184, 9542), (2202, 9464), (2366, 8808), (2569, 8112), (2704, 7707), (2936, 7098), (3549, 5872), (4056, 5138), (4368, 4771), (4404, 4732)]