20400620

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{9533}}^1$

素因数の和:9649

約数の個数: 24

約数和(自身を含む): 43246224

約数和(自身を除く): 22845604

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 9533, 19066, 38132, 47665, 95330, 190660, 1020031, 2040062, 4080124, 5100155, 10200310, 20400620]

約数ペア:

[(1, 20400620), (2, 10200310), (4, 5100155), (5, 4080124), (10, 2040062), (20, 1020031), (107, 190660), (214, 95330), (428, 47665), (535, 38132), (1070, 19066), (2140, 9533)]