21540545

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{283}}^1\times {\mathrm{1171}}^1$

素因数の和:1472

約数の個数: 16

約数和(自身を含む): 27959232

約数和(自身を除く): 6418687

約数列:

[1, 5, 13, 65, 283, 1171, 1415, 3679, 5855, 15223, 18395, 76115, 331393, 1656965, 4308109, 21540545]

約数ペア:

[(1, 21540545), (5, 4308109), (13, 1656965), (65, 331393), (283, 76115), (1171, 18395), (1415, 15223), (3679, 5855)]