21400533

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{30881}}^1$

素因数の和:30905

約数の個数: 24

約数和(自身を含む): 38540736

約数和(自身を除く): 17140203

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 30881, 92643, 216167, 277929, 339691, 648501, 1019073, 1945503, 2377837, 3057219, 7133511, 21400533]

約数ペア:

[(1, 21400533), (3, 7133511), (7, 3057219), (9, 2377837), (11, 1945503), (21, 1019073), (33, 648501), (63, 339691), (77, 277929), (99, 216167), (231, 92643), (693, 30881)]