1980855

素因数分解:

$3^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:157

約数の個数: 40

約数和(自身を含む): 3653232

約数和(自身を除く): 1672377

約数列:

[1, 3, 5, 9, 15, 27, 45, 67, 73, 81, 135, 201, 219, 335, 365, 405, 603, 657, 1005, 1095, 1809, 1971, 3015, 3285, 4891, 5427, 5913, 9045, 9855, 14673, 24455, 27135, 29565, 44019, 73365, 132057, 220095, 396171, 660285, 1980855]

約数ペア:

[(1, 1980855), (3, 660285), (5, 396171), (9, 220095), (15, 132057), (27, 73365), (45, 44019), (67, 29565), (73, 27135), (81, 24455), (135, 14673), (201, 9855), (219, 9045), (335, 5913), (365, 5427), (405, 4891), (603, 3285), (657, 3015), (1005, 1971), (1095, 1809)]