21808340

素因数分解:

$2^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{3089}}^1$

素因数の和:3451

約数の個数: 24

約数和(自身を含む): 45942120

約数和(自身を除く): 24133780

約数列:

[1, 2, 4, 5, 10, 20, 353, 706, 1412, 1765, 3089, 3530, 6178, 7060, 12356, 15445, 30890, 61780, 1090417, 2180834, 4361668, 5452085, 10904170, 21808340]

約数ペア:

[(1, 21808340), (2, 10904170), (4, 5452085), (5, 4361668), (10, 2180834), (20, 1090417), (353, 61780), (706, 30890), (1412, 15445), (1765, 12356), (3089, 7060), (3530, 6178)]