21011853

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{449}}^1\times {\mathrm{821}}^1$

素因数の和:1292

約数の個数: 16

約数和(自身を含む): 29592000

約数和(自身を除く): 8580147

約数列:

[1, 3, 19, 57, 449, 821, 1347, 2463, 8531, 15599, 25593, 46797, 368629, 1105887, 7003951, 21011853]

約数ペア:

[(1, 21011853), (3, 7003951), (19, 1105887), (57, 368629), (449, 46797), (821, 25593), (1347, 15599), (2463, 8531)]