81403578

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^2\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:240

約数の個数: 72

約数和(自身を含む): 188409312

約数和(自身を除く): 107005734

約数列:

[1, 2, 3, 6, 9, 18, 23, 46, 69, 83, 103, 138, 166, 206, 207, 249, 309, 414, 498, 529, 618, 747, 927, 1058, 1494, 1587, 1854, 1909, 2369, 3174, 3818, 4738, 4761, 5727, 7107, 8549, 9522, 11454, 14214, 17098, 17181, 21321, 25647, 34362, 42642, 43907, 51294, 54487, 76941, 87814, 108974, 131721, 153882, 163461, 196627, 263442, 326922, 393254, 395163, 490383, 589881, 790326, 980766, 1179762, 1769643, 3539286, 4522421, 9044842, 13567263, 27134526, 40701789, 81403578]

約数ペア:

[(1, 81403578), (2, 40701789), (3, 27134526), (6, 13567263), (9, 9044842), (18, 4522421), (23, 3539286), (46, 1769643), (69, 1179762), (83, 980766), (103, 790326), (138, 589881), (166, 490383), (206, 395163), (207, 393254), (249, 326922), (309, 263442), (414, 196627), (498, 163461), (529, 153882), (618, 131721), (747, 108974), (927, 87814), (1058, 76941), (1494, 54487), (1587, 51294), (1854, 43907), (1909, 42642), (2369, 34362), (3174, 25647), (3818, 21321), (4738, 17181), (4761, 17098), (5727, 14214), (7107, 11454), (8549, 9522)]