20856339

素因数分解:

$3^3\times 7^1\times {\mathrm{163}}^1\times {\mathrm{677}}^1$

素因数の和:856

約数の個数: 32

約数和(自身を含む): 35581440

約数和(自身を除く): 14725101

約数列:

[1, 3, 7, 9, 21, 27, 63, 163, 189, 489, 677, 1141, 1467, 2031, 3423, 4401, 4739, 6093, 10269, 14217, 18279, 30807, 42651, 110351, 127953, 331053, 772457, 993159, 2317371, 2979477, 6952113, 20856339]

約数ペア:

[(1, 20856339), (3, 6952113), (7, 2979477), (9, 2317371), (21, 993159), (27, 772457), (63, 331053), (163, 127953), (189, 110351), (489, 42651), (677, 30807), (1141, 18279), (1467, 14217), (2031, 10269), (3423, 6093), (4401, 4739)]