20977866

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1423}}^1$

素因数の和:1457

約数の個数: 80

約数和(自身を含む): 57894144

約数和(自身を除く): 36916278

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 39, 42, 54, 63, 78, 81, 91, 117, 126, 162, 182, 189, 234, 273, 351, 378, 546, 567, 702, 819, 1053, 1134, 1423, 1638, 2106, 2457, 2846, 4269, 4914, 7371, 8538, 9961, 12807, 14742, 18499, 19922, 25614, 29883, 36998, 38421, 55497, 59766, 76842, 89649, 110994, 115263, 129493, 166491, 179298, 230526, 258986, 268947, 332982, 388479, 499473, 537894, 776958, 806841, 998946, 1165437, 1498419, 1613682, 2330874, 2996838, 3496311, 6992622, 10488933, 20977866]

約数ペア:

[(1, 20977866), (2, 10488933), (3, 6992622), (6, 3496311), (7, 2996838), (9, 2330874), (13, 1613682), (14, 1498419), (18, 1165437), (21, 998946), (26, 806841), (27, 776958), (39, 537894), (42, 499473), (54, 388479), (63, 332982), (78, 268947), (81, 258986), (91, 230526), (117, 179298), (126, 166491), (162, 129493), (182, 115263), (189, 110994), (234, 89649), (273, 76842), (351, 59766), (378, 55497), (546, 38421), (567, 36998), (702, 29883), (819, 25614), (1053, 19922), (1134, 18499), (1423, 14742), (1638, 12807), (2106, 9961), (2457, 8538), (2846, 7371), (4269, 4914)]