21526220

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{5101}}^1$

素因数の和:5321

約数の個数: 24

約数和(自身を含む): 45428208

約数和(自身を除く): 23901988

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 5101, 10202, 20404, 25505, 51010, 102020, 1076311, 2152622, 4305244, 5381555, 10763110, 21526220]

約数ペア:

[(1, 21526220), (2, 10763110), (4, 5381555), (5, 4305244), (10, 2152622), (20, 1076311), (211, 102020), (422, 51010), (844, 25505), (1055, 20404), (2110, 10202), (4220, 5101)]