21861616

素因数分解:

$2^4\times 7^1\times {\mathrm{195193}}^1$

素因数の和:195208

約数の個数: 20

約数和(自身を含む): 48408112

約数和(自身を除く): 26546496

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 195193, 390386, 780772, 1366351, 1561544, 2732702, 3123088, 5465404, 10930808, 21861616]

約数ペア:

[(1, 21861616), (2, 10930808), (4, 5465404), (7, 3123088), (8, 2732702), (14, 1561544), (16, 1366351), (28, 780772), (56, 390386), (112, 195193)]