21188745

素因数分解:

$3^2\times 5^1\times {\mathrm{367}}^1\times {\mathrm{1283}}^1$

素因数の和:1661

約数の個数: 24

約数和(自身を含む): 36855936

約数和(自身を除く): 15667191

約数列:

[1, 3, 5, 9, 15, 45, 367, 1101, 1283, 1835, 3303, 3849, 5505, 6415, 11547, 16515, 19245, 57735, 470861, 1412583, 2354305, 4237749, 7062915, 21188745]

約数ペア:

[(1, 21188745), (3, 7062915), (5, 4237749), (9, 2354305), (15, 1412583), (45, 470861), (367, 57735), (1101, 19245), (1283, 16515), (1835, 11547), (3303, 6415), (3849, 5505)]