21017456

素因数分解:

$2^4\times {\mathrm{691}}^1\times {\mathrm{1901}}^1$

素因数の和:2600

約数の個数: 20

約数和(自身を含む): 40801704

約数和(自身を除く): 19784248

約数列:

[1, 2, 4, 8, 16, 691, 1382, 1901, 2764, 3802, 5528, 7604, 11056, 15208, 30416, 1313591, 2627182, 5254364, 10508728, 21017456]

約数ペア:

[(1, 21017456), (2, 10508728), (4, 5254364), (8, 2627182), (16, 1313591), (691, 30416), (1382, 15208), (1901, 11056), (2764, 7604), (3802, 5528)]