68665840

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{19961}}^1$

素因数の和:20017

約数の個数: 40

約数和(自身を含む): 163369008

約数和(自身を除く): 94703168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 19961, 39922, 79844, 99805, 159688, 199610, 319376, 399220, 798440, 858323, 1596880, 1716646, 3433292, 4291615, 6866584, 8583230, 13733168, 17166460, 34332920, 68665840]

約数ペア:

[(1, 68665840), (2, 34332920), (4, 17166460), (5, 13733168), (8, 8583230), (10, 6866584), (16, 4291615), (20, 3433292), (40, 1716646), (43, 1596880), (80, 858323), (86, 798440), (172, 399220), (215, 319376), (344, 199610), (430, 159688), (688, 99805), (860, 79844), (1720, 39922), (3440, 19961)]