21254410

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{31723}}^1$

素因数の和:31797

約数の個数: 16

約数和(自身を含む): 38830176

約数和(自身を除く): 17575766

約数列:

[1, 2, 5, 10, 67, 134, 335, 670, 31723, 63446, 158615, 317230, 2125441, 4250882, 10627205, 21254410]

約数ペア:

[(1, 21254410), (2, 10627205), (5, 4250882), (10, 2125441), (67, 317230), (134, 158615), (335, 63446), (670, 31723)]