19728625

素因数分解:

$5^3\times 7^2\times {\mathrm{3221}}^1$

素因数の和:3250

約数の個数: 24

約数和(自身を含む): 28650024

約数和(自身を除く): 8921399

約数列:

[1, 5, 7, 25, 35, 49, 125, 175, 245, 875, 1225, 3221, 6125, 16105, 22547, 80525, 112735, 157829, 402625, 563675, 789145, 2818375, 3945725, 19728625]

約数ペア:

[(1, 19728625), (5, 3945725), (7, 2818375), (25, 789145), (35, 563675), (49, 402625), (125, 157829), (175, 112735), (245, 80525), (875, 22547), (1225, 16105), (3221, 6125)]