20556207

素因数分解:

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

素因数の和:1860

約数の個数: 32

約数和(自身を含む): 35394560

約数和(自身を除く): 14838353

約数列:

[1, 3, 7, 9, 21, 27, 61, 63, 183, 189, 427, 549, 1281, 1647, 1783, 3843, 5349, 11529, 12481, 16047, 37443, 48141, 108763, 112329, 326289, 336987, 761341, 978867, 2284023, 2936601, 6852069, 20556207]

約数ペア:

[(1, 20556207), (3, 6852069), (7, 2936601), (9, 2284023), (21, 978867), (27, 761341), (61, 336987), (63, 326289), (183, 112329), (189, 108763), (427, 48141), (549, 37443), (1281, 16047), (1647, 12481), (1783, 11529), (3843, 5349)]