21858256

素因数分解:

$2^4\times 7^1\times {\mathrm{195163}}^1$

素因数の和:195178

約数の個数: 20

約数和(自身を含む): 48400672

約数和(自身を除く): 26542416

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 195163, 390326, 780652, 1366141, 1561304, 2732282, 3122608, 5464564, 10929128, 21858256]

約数ペア:

[(1, 21858256), (2, 10929128), (4, 5464564), (7, 3122608), (8, 2732282), (14, 1561304), (16, 1366141), (28, 780652), (56, 390326), (112, 195163)]