21800290

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{128237}}^1$

素因数の和:128261

約数の個数: 16

約数和(自身を含む): 41549112

約数和(自身を除く): 19748822

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 128237, 256474, 641185, 1282370, 2180029, 4360058, 10900145, 21800290]

約数ペア:

[(1, 21800290), (2, 10900145), (5, 4360058), (10, 2180029), (17, 1282370), (34, 641185), (85, 256474), (170, 128237)]