81963160

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47653}}^1$

素因数の和:47707

約数の個数: 32

約数和(自身を含む): 188709840

約数和(自身を除く): 106746680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 47653, 95306, 190612, 238265, 381224, 476530, 953060, 1906120, 2049079, 4098158, 8196316, 10245395, 16392632, 20490790, 40981580, 81963160]

約数ペア:

[(1, 81963160), (2, 40981580), (4, 20490790), (5, 16392632), (8, 10245395), (10, 8196316), (20, 4098158), (40, 2049079), (43, 1906120), (86, 953060), (172, 476530), (215, 381224), (344, 238265), (430, 190612), (860, 95306), (1720, 47653)]