21014405

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{223}}^1\times {\mathrm{401}}^1$

素因数の和:676

約数の個数: 16

約数和(自身を含む): 25933824

約数和(自身を除く): 4919419

約数列:

[1, 5, 47, 223, 235, 401, 1115, 2005, 10481, 18847, 52405, 89423, 94235, 447115, 4202881, 21014405]

約数ペア:

[(1, 21014405), (5, 4202881), (47, 447115), (223, 94235), (235, 89423), (401, 52405), (1115, 18847), (2005, 10481)]