21269759

素因数分解:

$7^1\times {\mathrm{19}}^3\times {\mathrm{443}}^1$

素因数の和:507

約数の個数: 16

約数和(自身を含む): 25716480

約数和(自身を除く): 4446721

約数列:

[1, 7, 19, 133, 361, 443, 2527, 3101, 6859, 8417, 48013, 58919, 159923, 1119461, 3038537, 21269759]

約数ペア:

[(1, 21269759), (7, 3038537), (19, 1119461), (133, 159923), (361, 58919), (443, 48013), (2527, 8417), (3101, 6859)]