20409417

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{11171}}^1$

素因数の和:11213

約数の個数: 24

約数和(自身を含む): 34856640

約数和(自身を除く): 14447223

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 11171, 33513, 78197, 100539, 234591, 323959, 703773, 971877, 2267713, 2915631, 6803139, 20409417]

約数ペア:

[(1, 20409417), (3, 6803139), (7, 2915631), (9, 2267713), (21, 971877), (29, 703773), (63, 323959), (87, 234591), (203, 100539), (261, 78197), (609, 33513), (1827, 11171)]