21017583

素因数分解:

$3^3\times {\mathrm{43}}^2\times {\mathrm{421}}^1$

素因数の和:516

約数の個数: 24

約数和(自身を含む): 31953840

約数和(自身を除く): 10936257

約数列:

[1, 3, 9, 27, 43, 129, 387, 421, 1161, 1263, 1849, 3789, 5547, 11367, 16641, 18103, 49923, 54309, 162927, 488781, 778429, 2335287, 7005861, 21017583]

約数ペア:

[(1, 21017583), (3, 7005861), (9, 2335287), (27, 778429), (43, 488781), (129, 162927), (387, 54309), (421, 49923), (1161, 18103), (1263, 16641), (1849, 11367), (3789, 5547)]