21448115

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{1061}}^1$

素因数の和:1390

約数の個数: 16

約数和(自身を含む): 27832896

約数和(自身を除く): 6384781

約数列:

[1, 5, 13, 65, 311, 1061, 1555, 4043, 5305, 13793, 20215, 68965, 329971, 1649855, 4289623, 21448115]

約数ペア:

[(1, 21448115), (5, 4289623), (13, 1649855), (65, 329971), (311, 68965), (1061, 20215), (1555, 13793), (4043, 5305)]