21897639

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{1583}}^1$

素因数の和:1671

約数の個数: 24

約数和(自身を含む): 33359040

約数和(自身を除く): 11461401

約数列:

[1, 3, 9, 29, 53, 87, 159, 261, 477, 1537, 1583, 4611, 4749, 13833, 14247, 45907, 83899, 137721, 251697, 413163, 755091, 2433071, 7299213, 21897639]

約数ペア:

[(1, 21897639), (3, 7299213), (9, 2433071), (29, 755091), (53, 413163), (87, 251697), (159, 137721), (261, 83899), (477, 45907), (1537, 14247), (1583, 13833), (4611, 4749)]