21479311

素因数分解:

$7^1\times {\mathrm{31}}^3\times {\mathrm{103}}^1$

素因数の和:203

約数の個数: 16

約数和(自身を含む): 25612288

約数和(自身を除く): 4132977

約数列:

[1, 7, 31, 103, 217, 721, 961, 3193, 6727, 22351, 29791, 98983, 208537, 692881, 3068473, 21479311]

約数ペア:

[(1, 21479311), (7, 3068473), (31, 692881), (103, 208537), (217, 98983), (721, 29791), (961, 22351), (3193, 6727)]