131444120

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{76421}}^1$

素因数の和:76475

約数の個数: 32

約数和(自身を含む): 302631120

約数和(自身を除く): 171187000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 76421, 152842, 305684, 382105, 611368, 764210, 1528420, 3056840, 3286103, 6572206, 13144412, 16430515, 26288824, 32861030, 65722060, 131444120]

約数ペア:

[(1, 131444120), (2, 65722060), (4, 32861030), (5, 26288824), (8, 16430515), (10, 13144412), (20, 6572206), (40, 3286103), (43, 3056840), (86, 1528420), (172, 764210), (215, 611368), (344, 382105), (430, 305684), (860, 152842), (1720, 76421)]