21287277

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{11317}}^1$

素因数の和:11353

約数の個数: 24

約数和(自身を含む): 35312160

約数和(自身を除く): 14024883

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 627, 1881, 11317, 33951, 101853, 124487, 215023, 373461, 645069, 1120383, 1935207, 2365253, 7095759, 21287277]

約数ペア:

[(1, 21287277), (3, 7095759), (9, 2365253), (11, 1935207), (19, 1120383), (33, 645069), (57, 373461), (99, 215023), (171, 124487), (209, 101853), (627, 33951), (1881, 11317)]