21127940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{62141}}^1$

素因数の和:62167

約数の個数: 24

約数和(自身を含む): 46979352

約数和(自身を除く): 25851412

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 62141, 124282, 248564, 310705, 621410, 1056397, 1242820, 2112794, 4225588, 5281985, 10563970, 21127940]

約数ペア:

[(1, 21127940), (2, 10563970), (4, 5281985), (5, 4225588), (10, 2112794), (17, 1242820), (20, 1056397), (34, 621410), (68, 310705), (85, 248564), (170, 124282), (340, 62141)]