20502909

素因数分解:

$3^3\times 7^1\times {\mathrm{83}}^1\times {\mathrm{1307}}^1$

素因数の和:1406

約数の個数: 32

約数和(自身を含む): 35159040

約数和(自身を除く): 14656131

約数列:

[1, 3, 7, 9, 21, 27, 63, 83, 189, 249, 581, 747, 1307, 1743, 2241, 3921, 5229, 9149, 11763, 15687, 27447, 35289, 82341, 108481, 247023, 325443, 759367, 976329, 2278101, 2928987, 6834303, 20502909]

約数ペア:

[(1, 20502909), (3, 6834303), (7, 2928987), (9, 2278101), (21, 976329), (27, 759367), (63, 325443), (83, 247023), (189, 108481), (249, 82341), (581, 35289), (747, 27447), (1307, 15687), (1743, 11763), (2241, 9149), (3921, 5229)]