21325579

素因数分解:

${\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1\times {\mathrm{347}}^1$

素因数の和:546

約数の個数: 16

約数和(自身を含む): 24120576

約数和(自身を除く): 2794997

約数列:

[1, 11, 37, 151, 347, 407, 1661, 3817, 5587, 12839, 52397, 61457, 141229, 576367, 1938689, 21325579]

約数ペア:

[(1, 21325579), (11, 1938689), (37, 576367), (151, 141229), (347, 61457), (407, 52397), (1661, 12839), (3817, 5587)]