21119497

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2791}}^1$

素因数の和:2868

約数の個数: 16

約数和(自身を含む): 25731072

約数和(自身を除く): 4611575

約数列:

[1, 7, 23, 47, 161, 329, 1081, 2791, 7567, 19537, 64193, 131177, 449351, 918239, 3017071, 21119497]

約数ペア:

[(1, 21119497), (7, 3017071), (23, 918239), (47, 449351), (161, 131177), (329, 64193), (1081, 19537), (2791, 7567)]