80538140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{1319}}^1$

素因数の和:1442

約数の個数: 48

約数和(自身を含む): 175633920

約数和(自身を除く): 95095780

約数列:

[1, 2, 4, 5, 10, 20, 43, 71, 86, 142, 172, 215, 284, 355, 430, 710, 860, 1319, 1420, 2638, 3053, 5276, 6106, 6595, 12212, 13190, 15265, 26380, 30530, 56717, 61060, 93649, 113434, 187298, 226868, 283585, 374596, 468245, 567170, 936490, 1134340, 1872980, 4026907, 8053814, 16107628, 20134535, 40269070, 80538140]

約数ペア:

[(1, 80538140), (2, 40269070), (4, 20134535), (5, 16107628), (10, 8053814), (20, 4026907), (43, 1872980), (71, 1134340), (86, 936490), (142, 567170), (172, 468245), (215, 374596), (284, 283585), (355, 226868), (430, 187298), (710, 113434), (860, 93649), (1319, 61060), (1420, 56717), (2638, 30530), (3053, 26380), (5276, 15265), (6106, 13190), (6595, 12212)]