21385284

素因数分解:

$2^2\times 3^1\times {\mathrm{157}}^1\times {\mathrm{11351}}^1$

素因数の和:11515

約数の個数: 24

約数和(自身を含む): 50221248

約数和(自身を除く): 28835964

約数列:

[1, 2, 3, 4, 6, 12, 157, 314, 471, 628, 942, 1884, 11351, 22702, 34053, 45404, 68106, 136212, 1782107, 3564214, 5346321, 7128428, 10692642, 21385284]

約数ペア:

[(1, 21385284), (2, 10692642), (3, 7128428), (4, 5346321), (6, 3564214), (12, 1782107), (157, 136212), (314, 68106), (471, 45404), (628, 34053), (942, 22702), (1884, 11351)]