20376290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2609}}^1$

素因数の和:2698

約数の個数: 32

約数和(自身を含む): 40590720

約数和(自身を除く): 20214430

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 142, 355, 710, 781, 1562, 2609, 3905, 5218, 7810, 13045, 26090, 28699, 57398, 143495, 185239, 286990, 370478, 926195, 1852390, 2037629, 4075258, 10188145, 20376290]

約数ペア:

[(1, 20376290), (2, 10188145), (5, 4075258), (10, 2037629), (11, 1852390), (22, 926195), (55, 370478), (71, 286990), (110, 185239), (142, 143495), (355, 57398), (710, 28699), (781, 26090), (1562, 13045), (2609, 7810), (3905, 5218)]