21018544

素因数分解:

$2^4\times {\mathrm{613}}^1\times {\mathrm{2143}}^1$

素因数の和:2764

約数の個数: 20

約数和(自身を含む): 40808896

約数和(自身を除く): 19790352

約数列:

[1, 2, 4, 8, 16, 613, 1226, 2143, 2452, 4286, 4904, 8572, 9808, 17144, 34288, 1313659, 2627318, 5254636, 10509272, 21018544]

約数ペア:

[(1, 21018544), (2, 10509272), (4, 5254636), (8, 2627318), (16, 1313659), (613, 34288), (1226, 17144), (2143, 9808), (2452, 8572), (4286, 4904)]