20804948

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{43}}^2\times {\mathrm{97}}^1$

素因数の和:216

約数の個数: 36

約数和(自身を含む): 38957940

約数和(自身を除く): 18152992

約数列:

[1, 2, 4, 29, 43, 58, 86, 97, 116, 172, 194, 388, 1247, 1849, 2494, 2813, 3698, 4171, 4988, 5626, 7396, 8342, 11252, 16684, 53621, 107242, 120959, 179353, 214484, 241918, 358706, 483836, 717412, 5201237, 10402474, 20804948]

約数ペア:

[(1, 20804948), (2, 10402474), (4, 5201237), (29, 717412), (43, 483836), (58, 358706), (86, 241918), (97, 214484), (116, 179353), (172, 120959), (194, 107242), (388, 53621), (1247, 16684), (1849, 11252), (2494, 8342), (2813, 7396), (3698, 5626), (4171, 4988)]