20621782

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{61}}^2\times {\mathrm{163}}^1$

素因数の和:304

約数の個数: 24

約数和(自身を含む): 33502248

約数和(自身を除く): 12880466

約数列:

[1, 2, 17, 34, 61, 122, 163, 326, 1037, 2074, 2771, 3721, 5542, 7442, 9943, 19886, 63257, 126514, 169031, 338062, 606523, 1213046, 10310891, 20621782]

約数ペア:

[(1, 20621782), (2, 10310891), (17, 1213046), (34, 606523), (61, 338062), (122, 169031), (163, 126514), (326, 63257), (1037, 19886), (2074, 9943), (2771, 7442), (3721, 5542)]