21375770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{164429}}^1$

素因数の和:164449

約数の個数: 16

約数和(自身を含む): 41436360

約数和(自身を除く): 20060590

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 164429, 328858, 822145, 1644290, 2137577, 4275154, 10687885, 21375770]

約数ペア:

[(1, 21375770), (2, 10687885), (5, 4275154), (10, 2137577), (13, 1644290), (26, 822145), (65, 328858), (130, 164429)]