20994897

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{90887}}^1$

素因数の和:90908

約数の個数: 16

約数和(自身を含む): 34900992

約数和(自身を除く): 13906095

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 90887, 272661, 636209, 999757, 1908627, 2999271, 6998299, 20994897]

約数ペア:

[(1, 20994897), (3, 6998299), (7, 2999271), (11, 1908627), (21, 999757), (33, 636209), (77, 272661), (231, 90887)]