21722141

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{293}}^1$

素因数の和:413

約数の個数: 24

約数和(自身を含む): 27147960

約数和(自身を除く): 5425819

約数列:

[1, 7, 17, 49, 89, 119, 293, 623, 833, 1513, 2051, 4361, 4981, 10591, 14357, 26077, 34867, 74137, 182539, 244069, 443309, 1277773, 3103163, 21722141]

約数ペア:

[(1, 21722141), (7, 3103163), (17, 1277773), (49, 443309), (89, 244069), (119, 182539), (293, 74137), (623, 34867), (833, 26077), (1513, 14357), (2051, 10591), (4361, 4981)]