21385287

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{30859}}^1$

素因数の和:30883

約数の個数: 24

約数和(自身を含む): 38513280

約数和(自身を除く): 17127993

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 30859, 92577, 216013, 277731, 339449, 648039, 1018347, 1944117, 2376143, 3055041, 7128429, 21385287]

約数ペア:

[(1, 21385287), (3, 7128429), (7, 3055041), (9, 2376143), (11, 1944117), (21, 1018347), (33, 648039), (63, 339449), (77, 277731), (99, 216013), (231, 92577), (693, 30859)]