20885787

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1303}}^1$

素因数の和:1459

約数の個数: 24

約数和(自身を含む): 32751264

約数和(自身を除く): 11865477

約数列:

[1, 3, 9, 13, 39, 117, 137, 411, 1233, 1303, 1781, 3909, 5343, 11727, 16029, 16939, 50817, 152451, 178511, 535533, 1606599, 2320643, 6961929, 20885787]

約数ペア:

[(1, 20885787), (3, 6961929), (9, 2320643), (13, 1606599), (39, 535533), (117, 178511), (137, 152451), (411, 50817), (1233, 16939), (1303, 16029), (1781, 11727), (3909, 5343)]