20438937

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{211}}^1\times {\mathrm{229}}^1$

素因数の和:493

約数の個数: 24

約数和(自身を含む): 30426240

約数和(自身を除く): 9987303

約数列:

[1, 3, 9, 47, 141, 211, 229, 423, 633, 687, 1899, 2061, 9917, 10763, 29751, 32289, 48319, 89253, 96867, 144957, 434871, 2270993, 6812979, 20438937]

約数ペア:

[(1, 20438937), (3, 6812979), (9, 2270993), (47, 434871), (141, 144957), (211, 96867), (229, 89253), (423, 48319), (633, 32289), (687, 29751), (1899, 10763), (2061, 9917)]