81405555

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{70481}}^1$

素因数の和:70507

約数の個数: 32

約数和(自身を含む): 162390528

約数和(自身を除く): 80984973

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155, 70481, 211443, 352405, 493367, 775291, 1057215, 1480101, 2325873, 2466835, 3876455, 5427037, 7400505, 11629365, 16281111, 27135185, 81405555]

約数ペア:

[(1, 81405555), (3, 27135185), (5, 16281111), (7, 11629365), (11, 7400505), (15, 5427037), (21, 3876455), (33, 2466835), (35, 2325873), (55, 1480101), (77, 1057215), (105, 775291), (165, 493367), (231, 352405), (385, 211443), (1155, 70481)]