12720980

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{8713}}^1$

素因数の和:8795

約数の個数: 24

約数和(自身を含む): 27083112

約数和(自身を除く): 14362132

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 8713, 17426, 34852, 43565, 87130, 174260, 636049, 1272098, 2544196, 3180245, 6360490, 12720980]

約数ペア:

[(1, 12720980), (2, 6360490), (4, 3180245), (5, 2544196), (10, 1272098), (20, 636049), (73, 174260), (146, 87130), (292, 43565), (365, 34852), (730, 17426), (1460, 8713)]