20175245680

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{521}}^1\times {\mathrm{11257}}^1$

素因数の和:11834

約数の個数: 80

約数和(自身を含む): 48094716384

約数和(自身を除く): 27919470704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 521, 688, 860, 1042, 1720, 2084, 2605, 3440, 4168, 5210, 8336, 10420, 11257, 20840, 22403, 22514, 41680, 44806, 45028, 56285, 89612, 90056, 112015, 112570, 179224, 180112, 224030, 225140, 358448, 448060, 450280, 484051, 896120, 900560, 968102, 1792240, 1936204, 2420255, 3872408, 4840510, 5864897, 7744816, 9681020, 11729794, 19362040, 23459588, 29324485, 38724080, 46919176, 58648970, 93838352, 117297940, 234595880, 252190571, 469191760, 504381142, 1008762284, 1260952855, 2017524568, 2521905710, 4035049136, 5043811420, 10087622840, 20175245680]

約数ペア:

[(1, 20175245680), (2, 10087622840), (4, 5043811420), (5, 4035049136), (8, 2521905710), (10, 2017524568), (16, 1260952855), (20, 1008762284), (40, 504381142), (43, 469191760), (80, 252190571), (86, 234595880), (172, 117297940), (215, 93838352), (344, 58648970), (430, 46919176), (521, 38724080), (688, 29324485), (860, 23459588), (1042, 19362040), (1720, 11729794), (2084, 9681020), (2605, 7744816), (3440, 5864897), (4168, 4840510), (5210, 3872408), (8336, 2420255), (10420, 1936204), (11257, 1792240), (20840, 968102), (22403, 900560), (22514, 896120), (41680, 484051), (44806, 450280), (45028, 448060), (56285, 358448), (89612, 225140), (90056, 224030), (112015, 180112), (112570, 179224)]