20786716

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{7109}}^1$

素因数の和:7173

約数の個数: 24

約数和(自身を含む): 39417840

約数和(自身を除く): 18631124

約数列:

[1, 2, 4, 17, 34, 43, 68, 86, 172, 731, 1462, 2924, 7109, 14218, 28436, 120853, 241706, 305687, 483412, 611374, 1222748, 5196679, 10393358, 20786716]

約数ペア:

[(1, 20786716), (2, 10393358), (4, 5196679), (17, 1222748), (34, 611374), (43, 483412), (68, 305687), (86, 241706), (172, 120853), (731, 28436), (1462, 14218), (2924, 7109)]