21344080

素因数分解:

$2^4\times 5^1\times {\mathrm{266801}}^1$

素因数の和:266814

約数の個数: 20

約数和(自身を含む): 49625172

約数和(自身を除く): 28281092

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 266801, 533602, 1067204, 1334005, 2134408, 2668010, 4268816, 5336020, 10672040, 21344080]

約数ペア:

[(1, 21344080), (2, 10672040), (4, 5336020), (5, 4268816), (8, 2668010), (10, 2134408), (16, 1334005), (20, 1067204), (40, 533602), (80, 266801)]