68928280

素因数分解:

$2^3\times 5^1\times {\mathrm{1223}}^1\times {\mathrm{1409}}^1$

素因数の和:2643

約数の個数: 32

約数和(自身を含む): 155325600

約数和(自身を除く): 86397320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1223, 1409, 2446, 2818, 4892, 5636, 6115, 7045, 9784, 11272, 12230, 14090, 24460, 28180, 48920, 56360, 1723207, 3446414, 6892828, 8616035, 13785656, 17232070, 34464140, 68928280]

約数ペア:

[(1, 68928280), (2, 34464140), (4, 17232070), (5, 13785656), (8, 8616035), (10, 6892828), (20, 3446414), (40, 1723207), (1223, 56360), (1409, 48920), (2446, 28180), (2818, 24460), (4892, 14090), (5636, 12230), (6115, 11272), (7045, 9784)]