20668294

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:340

約数の個数: 32

約数和(自身を含む): 34252416

約数和(自身を除く): 13584122

約数列:

[1, 2, 17, 34, 43, 67, 86, 134, 211, 422, 731, 1139, 1462, 2278, 2881, 3587, 5762, 7174, 9073, 14137, 18146, 28274, 48977, 97954, 154241, 240329, 308482, 480658, 607891, 1215782, 10334147, 20668294]

約数ペア:

[(1, 20668294), (2, 10334147), (17, 1215782), (34, 607891), (43, 480658), (67, 308482), (86, 240329), (134, 154241), (211, 97954), (422, 48977), (731, 28274), (1139, 18146), (1462, 14137), (2278, 9073), (2881, 7174), (3587, 5762)]