21107489

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{641}}^1$

素因数の和:820

約数の個数: 16

約数和(自身を含む): 24267600

約数和(自身を除く): 3160111

約数列:

[1, 13, 17, 149, 221, 641, 1937, 2533, 8333, 10897, 32929, 95509, 141661, 1241617, 1623653, 21107489]

約数ペア:

[(1, 21107489), (13, 1623653), (17, 1241617), (149, 141661), (221, 95509), (641, 32929), (1937, 10897), (2533, 8333)]