1978156986

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{357197}}^1$

素因数の和:357286

約数の個数: 32

約数和(自身を含む): 4320667008

約数和(自身を除く): 2342510022

約数列:

[1, 2, 3, 6, 13, 26, 39, 71, 78, 142, 213, 426, 923, 1846, 2769, 5538, 357197, 714394, 1071591, 2143182, 4643561, 9287122, 13930683, 25360987, 27861366, 50721974, 76082961, 152165922, 329692831, 659385662, 989078493, 1978156986]

約数ペア:

[(1, 1978156986), (2, 989078493), (3, 659385662), (6, 329692831), (13, 152165922), (26, 76082961), (39, 50721974), (71, 27861366), (78, 25360987), (142, 13930683), (213, 9287122), (426, 4643561), (923, 2143182), (1846, 1071591), (2769, 714394), (5538, 357197)]