408080450

素因数分解:

$2^1\times 5^2\times {\mathrm{389}}^1\times {\mathrm{20981}}^1$

素因数の和:21382

約数の個数: 24

約数和(自身を含む): 761017140

約数和(自身を除く): 352936690

約数列:

[1, 2, 5, 10, 25, 50, 389, 778, 1945, 3890, 9725, 19450, 20981, 41962, 104905, 209810, 524525, 1049050, 8161609, 16323218, 40808045, 81616090, 204040225, 408080450]

約数ペア:

[(1, 408080450), (2, 204040225), (5, 81616090), (10, 40808045), (25, 16323218), (50, 8161609), (389, 1049050), (778, 524525), (1945, 209810), (3890, 104905), (9725, 41962), (19450, 20981)]