15988161

素因数分解:

$3^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{1783}}^1$

素因数の和:1861

約数の個数: 24

約数和(自身を含む): 25218624

約数和(自身を除く): 9230463

約数列:

[1, 3, 7, 21, 49, 61, 147, 183, 427, 1281, 1783, 2989, 5349, 8967, 12481, 37443, 87367, 108763, 262101, 326289, 761341, 2284023, 5329387, 15988161]

約数ペア:

[(1, 15988161), (3, 5329387), (7, 2284023), (21, 761341), (49, 326289), (61, 262101), (147, 108763), (183, 87367), (427, 37443), (1281, 12481), (1783, 8967), (2989, 5349)]