19907573776

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{28935427}}^1$

素因数の和:28935478

約数の個数: 20

約数和(自身を含む): 39467923792

約数和(自身を除く): 19560350016

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 28935427, 57870854, 115741708, 231483416, 462966832, 1244223361, 2488446722, 4976893444, 9953786888, 19907573776]

約数ペア:

[(1, 19907573776), (2, 9953786888), (4, 4976893444), (8, 2488446722), (16, 1244223361), (43, 462966832), (86, 231483416), (172, 115741708), (344, 57870854), (688, 28935427)]