81681156

素因数分解:

$2^2\times 3^3\times {\mathrm{31}}^2\times {\mathrm{787}}^1$

素因数の和:862

約数の個数: 72

約数和(自身を含む): 219095520

約数和(自身を除く): 137414364

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 31, 36, 54, 62, 93, 108, 124, 186, 279, 372, 558, 787, 837, 961, 1116, 1574, 1674, 1922, 2361, 2883, 3148, 3348, 3844, 4722, 5766, 7083, 8649, 9444, 11532, 14166, 17298, 21249, 24397, 25947, 28332, 34596, 42498, 48794, 51894, 73191, 84996, 97588, 103788, 146382, 219573, 292764, 439146, 658719, 756307, 878292, 1317438, 1512614, 2268921, 2634876, 3025228, 4537842, 6806763, 9075684, 13613526, 20420289, 27227052, 40840578, 81681156]

約数ペア:

[(1, 81681156), (2, 40840578), (3, 27227052), (4, 20420289), (6, 13613526), (9, 9075684), (12, 6806763), (18, 4537842), (27, 3025228), (31, 2634876), (36, 2268921), (54, 1512614), (62, 1317438), (93, 878292), (108, 756307), (124, 658719), (186, 439146), (279, 292764), (372, 219573), (558, 146382), (787, 103788), (837, 97588), (961, 84996), (1116, 73191), (1574, 51894), (1674, 48794), (1922, 42498), (2361, 34596), (2883, 28332), (3148, 25947), (3348, 24397), (3844, 21249), (4722, 17298), (5766, 14166), (7083, 11532), (8649, 9444)]