21144263

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{701}}^1$

素因数の和:878

約数の個数: 16

約数和(自身を含む): 25159680

約数和(自身を除く): 4015417

約数列:

[1, 7, 31, 139, 217, 701, 973, 4309, 4907, 21731, 30163, 97439, 152117, 682073, 3020609, 21144263]

約数ペア:

[(1, 21144263), (7, 3020609), (31, 682073), (139, 152117), (217, 97439), (701, 30163), (973, 21731), (4309, 4907)]