18220132

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 38389120

約数和(自身を除く): 20168988

約数列:

[1, 2, 4, 7, 14, 28, 37, 43, 74, 86, 148, 172, 259, 301, 409, 518, 602, 818, 1036, 1204, 1591, 1636, 2863, 3182, 5726, 6364, 11137, 11452, 15133, 17587, 22274, 30266, 35174, 44548, 60532, 70348, 105931, 123109, 211862, 246218, 423724, 492436, 650719, 1301438, 2602876, 4555033, 9110066, 18220132]

約数ペア:

[(1, 18220132), (2, 9110066), (4, 4555033), (7, 2602876), (14, 1301438), (28, 650719), (37, 492436), (43, 423724), (74, 246218), (86, 211862), (148, 123109), (172, 105931), (259, 70348), (301, 60532), (409, 44548), (518, 35174), (602, 30266), (818, 22274), (1036, 17587), (1204, 15133), (1591, 11452), (1636, 11137), (2863, 6364), (3182, 5726)]