21730085

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1697}}^1$

素因数の和:1912

約数の個数: 16

約数和(自身を含む): 28241136

約数和(自身を除く): 6511051

約数列:

[1, 5, 13, 65, 197, 985, 1697, 2561, 8485, 12805, 22061, 110305, 334309, 1671545, 4346017, 21730085]

約数ペア:

[(1, 21730085), (5, 4346017), (13, 1671545), (65, 334309), (197, 110305), (985, 22061), (1697, 12805), (2561, 8485)]