20847309

素因数分解:

$3^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{9829}}^1$

素因数の和:9940

約数の個数: 16

約数和(自身を含む): 32085120

約数和(自身を除く): 11237811

約数列:

[1, 3, 7, 21, 101, 303, 707, 2121, 9829, 29487, 68803, 206409, 992729, 2978187, 6949103, 20847309]

約数ペア:

[(1, 20847309), (3, 6949103), (7, 2978187), (21, 992729), (101, 206409), (303, 68803), (707, 29487), (2121, 9829)]