18120935

素因数分解:

$5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1999}}^1$

素因数の和:2055

約数の個数: 24

約数和(自身を含む): 25992000

約数和(自身を除く): 7871065

約数列:

[1, 5, 7, 35, 37, 49, 185, 245, 259, 1295, 1813, 1999, 9065, 9995, 13993, 69965, 73963, 97951, 369815, 489755, 517741, 2588705, 3624187, 18120935]

約数ペア:

[(1, 18120935), (5, 3624187), (7, 2588705), (35, 517741), (37, 489755), (49, 369815), (185, 97951), (245, 73963), (259, 69965), (1295, 13993), (1813, 9995), (1999, 9065)]