21411395

素因数分解:

$5^1\times {\mathrm{59}}^1\times {\mathrm{181}}^1\times {\mathrm{401}}^1$

素因数の和:646

約数の個数: 16

約数和(自身を含む): 26339040

約数和(自身を除く): 4927645

約数列:

[1, 5, 59, 181, 295, 401, 905, 2005, 10679, 23659, 53395, 72581, 118295, 362905, 4282279, 21411395]

約数ペア:

[(1, 21411395), (5, 4282279), (59, 362905), (181, 118295), (295, 72581), (401, 53395), (905, 23659), (2005, 10679)]