21242135

素因数分解:

$5^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{1129}}^1$

素因数の和:1258

約数の個数: 16

約数和(自身を含む): 26360640

約数和(自身を除く): 5118505

約数列:

[1, 5, 53, 71, 265, 355, 1129, 3763, 5645, 18815, 59837, 80159, 299185, 400795, 4248427, 21242135]

約数ペア:

[(1, 21242135), (5, 4248427), (53, 400795), (71, 299185), (265, 80159), (355, 59837), (1129, 18815), (3763, 5645)]