21781404

素因数分解:

$2^2\times 3^2\times {\mathrm{605039}}^1$

素因数の和:605049

約数の個数: 18

約数和(自身を含む): 55058640

約数和(自身を除く): 33277236

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 605039, 1210078, 1815117, 2420156, 3630234, 5445351, 7260468, 10890702, 21781404]

約数ペア:

[(1, 21781404), (2, 10890702), (3, 7260468), (4, 5445351), (6, 3630234), (9, 2420156), (12, 1815117), (18, 1210078), (36, 605039)]