20479990

素因数分解:

$2^1\times 5^1\times {\mathrm{839}}^1\times {\mathrm{2441}}^1$

素因数の和:3287

約数の個数: 16

約数和(自身を含む): 36923040

約数和(自身を除く): 16443050

約数列:

[1, 2, 5, 10, 839, 1678, 2441, 4195, 4882, 8390, 12205, 24410, 2047999, 4095998, 10239995, 20479990]

約数ペア:

[(1, 20479990), (2, 10239995), (5, 4095998), (10, 2047999), (839, 24410), (1678, 12205), (2441, 8390), (4195, 4882)]