87981971

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{991}}^1\times {\mathrm{1153}}^1$

素因数の和:2162

約数の個数: 16

約数和(自身を含む): 109897728

約数和(自身を除く): 21915757

約数列:

[1, 7, 11, 77, 991, 1153, 6937, 8071, 10901, 12683, 76307, 88781, 1142623, 7998361, 12568853, 87981971]

約数ペア:

[(1, 87981971), (7, 12568853), (11, 7998361), (77, 1142623), (991, 88781), (1153, 76307), (6937, 12683), (8071, 10901)]