20990112

素因数分解:

$2^5\times 3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1$

素因数の和:187

約数の個数: 144

約数和(自身を含む): 65691360

約数和(自身を除く): 44701248

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 13, 16, 22, 24, 26, 32, 33, 39, 44, 48, 52, 66, 78, 88, 96, 104, 121, 132, 139, 143, 156, 176, 208, 242, 264, 278, 286, 312, 352, 363, 416, 417, 429, 484, 528, 556, 572, 624, 726, 834, 858, 968, 1056, 1112, 1144, 1248, 1452, 1529, 1573, 1668, 1716, 1807, 1936, 2224, 2288, 2904, 3058, 3146, 3336, 3432, 3614, 3872, 4448, 4576, 4587, 4719, 5421, 5808, 6116, 6292, 6672, 6864, 7228, 9174, 9438, 10842, 11616, 12232, 12584, 13344, 13728, 14456, 16819, 18348, 18876, 19877, 21684, 24464, 25168, 28912, 33638, 36696, 37752, 39754, 43368, 48928, 50336, 50457, 57824, 59631, 67276, 73392, 75504, 79508, 86736, 100914, 119262, 134552, 146784, 151008, 159016, 173472, 201828, 218647, 238524, 269104, 318032, 403656, 437294, 477048, 538208, 636064, 655941, 807312, 874588, 954096, 1311882, 1614624, 1749176, 1908192, 2623764, 3498352, 5247528, 6996704, 10495056, 20990112]

約数ペア:

[(1, 20990112), (2, 10495056), (3, 6996704), (4, 5247528), (6, 3498352), (8, 2623764), (11, 1908192), (12, 1749176), (13, 1614624), (16, 1311882), (22, 954096), (24, 874588), (26, 807312), (32, 655941), (33, 636064), (39, 538208), (44, 477048), (48, 437294), (52, 403656), (66, 318032), (78, 269104), (88, 238524), (96, 218647), (104, 201828), (121, 173472), (132, 159016), (139, 151008), (143, 146784), (156, 134552), (176, 119262), (208, 100914), (242, 86736), (264, 79508), (278, 75504), (286, 73392), (312, 67276), (352, 59631), (363, 57824), (416, 50457), (417, 50336), (429, 48928), (484, 43368), (528, 39754), (556, 37752), (572, 36696), (624, 33638), (726, 28912), (834, 25168), (858, 24464), (968, 21684), (1056, 19877), (1112, 18876), (1144, 18348), (1248, 16819), (1452, 14456), (1529, 13728), (1573, 13344), (1668, 12584), (1716, 12232), (1807, 11616), (1936, 10842), (2224, 9438), (2288, 9174), (2904, 7228), (3058, 6864), (3146, 6672), (3336, 6292), (3432, 6116), (3614, 5808), (3872, 5421), (4448, 4719), (4576, 4587)]