21903115

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{1063}}^1$

素因数の和:1398

約数の個数: 16

約数和(自身を含む): 28421568

約数和(自身を除く): 6518453

約数列:

[1, 5, 13, 65, 317, 1063, 1585, 4121, 5315, 13819, 20605, 69095, 336971, 1684855, 4380623, 21903115]

約数ペア:

[(1, 21903115), (5, 4380623), (13, 1684855), (65, 336971), (317, 69095), (1063, 20605), (1585, 13819), (4121, 5315)]