21365456

素因数分解:

$2^4\times 7^1\times {\mathrm{190763}}^1$

素因数の和:190778

約数の個数: 20

約数和(自身を含む): 47309472

約数和(自身を除く): 25944016

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 190763, 381526, 763052, 1335341, 1526104, 2670682, 3052208, 5341364, 10682728, 21365456]

約数ペア:

[(1, 21365456), (2, 10682728), (4, 5341364), (7, 3052208), (8, 2670682), (14, 1526104), (16, 1335341), (28, 763052), (56, 381526), (112, 190763)]