68421987

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{7687}}^1$

素因数の和:7759

約数の個数: 24

約数和(自身を含む): 105540864

約数和(自身を除く): 37118877

約数列:

[1, 3, 9, 23, 43, 69, 129, 207, 387, 989, 2967, 7687, 8901, 23061, 69183, 176801, 330541, 530403, 991623, 1591209, 2974869, 7602443, 22807329, 68421987]

約数ペア:

[(1, 68421987), (3, 22807329), (9, 7602443), (23, 2974869), (43, 1591209), (69, 991623), (129, 530403), (207, 330541), (387, 176801), (989, 69183), (2967, 23061), (7687, 8901)]