20509972

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{23629}}^1$

素因数の和:23671

約数の個数: 24

約数和(自身を含む): 42344960

約数和(自身を除く): 21834988

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 23629, 47258, 94516, 165403, 330806, 661612, 732499, 1464998, 2929996, 5127493, 10254986, 20509972]

約数ペア:

[(1, 20509972), (2, 10254986), (4, 5127493), (7, 2929996), (14, 1464998), (28, 732499), (31, 661612), (62, 330806), (124, 165403), (217, 94516), (434, 47258), (868, 23629)]