16621865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{313}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 23210880

約数和(自身を除く): 6589015

約数列:

[1, 5, 13, 19, 43, 65, 95, 215, 247, 313, 559, 817, 1235, 1565, 2795, 4069, 4085, 5947, 10621, 13459, 20345, 29735, 53105, 67295, 77311, 174967, 255721, 386555, 874835, 1278605, 3324373, 16621865]

約数ペア:

[(1, 16621865), (5, 3324373), (13, 1278605), (19, 874835), (43, 386555), (65, 255721), (95, 174967), (215, 77311), (247, 67295), (313, 53105), (559, 29735), (817, 20345), (1235, 13459), (1565, 10621), (2795, 5947), (4069, 4085)]