21208580

素因数分解:

$2^2\times 5^1\times {\mathrm{607}}^1\times {\mathrm{1747}}^1$

素因数の和:2363

約数の個数: 24

約数和(自身を含む): 44636928

約数和(自身を除く): 23428348

約数列:

[1, 2, 4, 5, 10, 20, 607, 1214, 1747, 2428, 3035, 3494, 6070, 6988, 8735, 12140, 17470, 34940, 1060429, 2120858, 4241716, 5302145, 10604290, 21208580]

約数ペア:

[(1, 21208580), (2, 10604290), (4, 5302145), (5, 4241716), (10, 2120858), (20, 1060429), (607, 34940), (1214, 17470), (1747, 12140), (2428, 8735), (3035, 6988), (3494, 6070)]