18787791

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{709}}^1$

素因数の和:807

約数の個数: 24

約数和(自身を含む): 27951280

約数和(自身を除く): 9163489

約数列:

[1, 3, 11, 33, 73, 121, 219, 363, 709, 803, 2127, 2409, 7799, 8833, 23397, 26499, 51757, 85789, 155271, 257367, 569327, 1707981, 6262597, 18787791]

約数ペア:

[(1, 18787791), (3, 6262597), (11, 1707981), (33, 569327), (73, 257367), (121, 155271), (219, 85789), (363, 51757), (709, 26499), (803, 23397), (2127, 8833), (2409, 7799)]