16921018881

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{757}}^1\times {\mathrm{1481}}^1$

素因数の和:2303

約数の個数: 64

約数和(自身を含む): 27679491840

約数和(自身を除く): 10758472959

約数列:

[1, 3, 9, 13, 27, 39, 43, 117, 129, 351, 387, 559, 757, 1161, 1481, 1677, 2271, 4443, 5031, 6813, 9841, 13329, 15093, 19253, 20439, 29523, 32551, 39987, 57759, 63683, 88569, 97653, 173277, 191049, 265707, 292959, 423163, 519831, 573147, 827879, 878877, 1121117, 1269489, 1719441, 2483637, 3363351, 3808467, 7450911, 10090053, 11425401, 14574521, 22352733, 30270159, 43723563, 48208031, 131170689, 144624093, 393512067, 433872279, 626704403, 1301616837, 1880113209, 5640339627, 16921018881]

約数ペア:

[(1, 16921018881), (3, 5640339627), (9, 1880113209), (13, 1301616837), (27, 626704403), (39, 433872279), (43, 393512067), (117, 144624093), (129, 131170689), (351, 48208031), (387, 43723563), (559, 30270159), (757, 22352733), (1161, 14574521), (1481, 11425401), (1677, 10090053), (2271, 7450911), (4443, 3808467), (5031, 3363351), (6813, 2483637), (9841, 1719441), (13329, 1269489), (15093, 1121117), (19253, 878877), (20439, 827879), (29523, 573147), (32551, 519831), (39987, 423163), (57759, 292959), (63683, 265707), (88569, 191049), (97653, 173277)]