20157081

素因数分解:

$3^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{1031}}^1$

素因数の和:1074

約数の個数: 32

約数和(自身を含む): 33024000

約数和(自身を除く): 12866919

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 343, 399, 931, 1029, 1031, 2793, 3093, 6517, 7217, 19551, 19589, 21651, 50519, 58767, 137123, 151557, 353633, 411369, 959861, 1060899, 2879583, 6719027, 20157081]

約数ペア:

[(1, 20157081), (3, 6719027), (7, 2879583), (19, 1060899), (21, 959861), (49, 411369), (57, 353633), (133, 151557), (147, 137123), (343, 58767), (399, 50519), (931, 21651), (1029, 19589), (1031, 19551), (2793, 7217), (3093, 6517)]