81806355

素因数分解:

$3^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{2767}}^1$

素因数の和:2857

約数の個数: 40

約数和(自身を含む): 148708032

約数和(自身を除く): 66901677

約数列:

[1, 3, 5, 9, 15, 27, 45, 73, 81, 135, 219, 365, 405, 657, 1095, 1971, 2767, 3285, 5913, 8301, 9855, 13835, 24903, 29565, 41505, 74709, 124515, 201991, 224127, 373545, 605973, 1009955, 1120635, 1817919, 3029865, 5453757, 9089595, 16361271, 27268785, 81806355]

約数ペア:

[(1, 81806355), (3, 27268785), (5, 16361271), (9, 9089595), (15, 5453757), (27, 3029865), (45, 1817919), (73, 1120635), (81, 1009955), (135, 605973), (219, 373545), (365, 224127), (405, 201991), (657, 124515), (1095, 74709), (1971, 41505), (2767, 29565), (3285, 24903), (5913, 13835), (8301, 9855)]