21279265

素因数分解:

$5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{3359}}^1$

素因数の和:3552

約数の個数: 16

約数和(自身を含む): 29352960

約数和(自身を除く): 8073695

約数列:

[1, 5, 7, 35, 181, 905, 1267, 3359, 6335, 16795, 23513, 117565, 607979, 3039895, 4255853, 21279265]

約数ペア:

[(1, 21279265), (5, 4255853), (7, 3039895), (35, 607979), (181, 117565), (905, 23513), (1267, 16795), (3359, 6335)]