20437137

素因数分解:

$3^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1523}}^1$

素因数の和:1610

約数の個数: 32

約数和(自身を含む): 35112960

約数和(自身を除く): 14675823

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 189, 213, 497, 639, 1491, 1523, 1917, 4473, 4569, 10661, 13419, 13707, 31983, 41121, 95949, 108133, 287847, 324399, 756931, 973197, 2270793, 2919591, 6812379, 20437137]

約数ペア:

[(1, 20437137), (3, 6812379), (7, 2919591), (9, 2270793), (21, 973197), (27, 756931), (63, 324399), (71, 287847), (189, 108133), (213, 95949), (497, 41121), (639, 31983), (1491, 13707), (1523, 13419), (1917, 10661), (4473, 4569)]