787887

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:220

約数の個数: 20

約数和(自身を含む): 1202256

約数和(自身を除く): 414369

約数列:

[1, 3, 9, 27, 71, 81, 137, 213, 411, 639, 1233, 1917, 3699, 5751, 9727, 11097, 29181, 87543, 262629, 787887]

約数ペア:

[(1, 787887), (3, 262629), (9, 87543), (27, 29181), (71, 11097), (81, 9727), (137, 5751), (213, 3699), (411, 1917), (639, 1233)]