21231161

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:333

約数の個数: 24

約数和(自身を含む): 26046720

約数和(自身を除く): 4815559

約数列:

[1, 7, 29, 49, 67, 203, 223, 469, 1421, 1561, 1943, 3283, 6467, 10927, 13601, 14941, 45269, 95207, 104587, 316883, 433289, 732109, 3033023, 21231161]

約数ペア:

[(1, 21231161), (7, 3033023), (29, 732109), (49, 433289), (67, 316883), (203, 104587), (223, 95207), (469, 45269), (1421, 14941), (1561, 13601), (1943, 10927), (3283, 6467)]