21018823

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{2203}}^1$

素因数の和:2286

約数の個数: 16

約数和(自身を含む): 25390080

約数和(自身を除く): 4371257

約数列:

[1, 7, 29, 47, 203, 329, 1363, 2203, 9541, 15421, 63887, 103541, 447209, 724787, 3002689, 21018823]

約数ペア:

[(1, 21018823), (7, 3002689), (29, 724787), (47, 447209), (203, 103541), (329, 63887), (1363, 15421), (2203, 9541)]