21205284

素因数分解:

$2^2\times 3^1\times {\mathrm{139}}^1\times {\mathrm{12713}}^1$

素因数の和:12859

約数の個数: 24

約数和(自身を含む): 49838880

約数和(自身を除く): 28633596

約数列:

[1, 2, 3, 4, 6, 12, 139, 278, 417, 556, 834, 1668, 12713, 25426, 38139, 50852, 76278, 152556, 1767107, 3534214, 5301321, 7068428, 10602642, 21205284]

約数ペア:

[(1, 21205284), (2, 10602642), (3, 7068428), (4, 5301321), (6, 3534214), (12, 1767107), (139, 152556), (278, 76278), (417, 50852), (556, 38139), (834, 25426), (1668, 12713)]