31190913

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1559}}^1$

素因数の和:1603

約数の個数: 40

約数和(自身を含む): 52852800

約数和(自身を除く): 21661887

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 81, 117, 171, 247, 351, 513, 741, 1053, 1539, 1559, 2223, 4677, 6669, 14031, 20007, 20267, 29621, 42093, 60801, 88863, 126279, 182403, 266589, 385073, 547209, 799767, 1155219, 1641627, 2399301, 3465657, 10396971, 31190913]

約数ペア:

[(1, 31190913), (3, 10396971), (9, 3465657), (13, 2399301), (19, 1641627), (27, 1155219), (39, 799767), (57, 547209), (81, 385073), (117, 266589), (171, 182403), (247, 126279), (351, 88863), (513, 60801), (741, 42093), (1053, 29621), (1539, 20267), (1559, 20007), (2223, 14031), (4677, 6669)]