78812120

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{45821}}^1$

素因数の和:45875

約数の個数: 32

約数和(自身を含む): 181455120

約数和(自身を除く): 102643000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 45821, 91642, 183284, 229105, 366568, 458210, 916420, 1832840, 1970303, 3940606, 7881212, 9851515, 15762424, 19703030, 39406060, 78812120]

約数ペア:

[(1, 78812120), (2, 39406060), (4, 19703030), (5, 15762424), (8, 9851515), (10, 7881212), (20, 3940606), (40, 1970303), (43, 1832840), (86, 916420), (172, 458210), (215, 366568), (344, 229105), (430, 183284), (860, 91642), (1720, 45821)]