17906060

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{443}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 39384576

約数和(自身を除く): 21478516

約数列:

[1, 2, 4, 5, 10, 20, 43, 47, 86, 94, 172, 188, 215, 235, 430, 443, 470, 860, 886, 940, 1772, 2021, 2215, 4042, 4430, 8084, 8860, 10105, 19049, 20210, 20821, 38098, 40420, 41642, 76196, 83284, 95245, 104105, 190490, 208210, 380980, 416420, 895303, 1790606, 3581212, 4476515, 8953030, 17906060]

約数ペア:

[(1, 17906060), (2, 8953030), (4, 4476515), (5, 3581212), (10, 1790606), (20, 895303), (43, 416420), (47, 380980), (86, 208210), (94, 190490), (172, 104105), (188, 95245), (215, 83284), (235, 76196), (430, 41642), (443, 40420), (470, 38098), (860, 20821), (886, 20210), (940, 19049), (1772, 10105), (2021, 8860), (2215, 8084), (4042, 4430)]