18733221

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^2$

素因数の和:147

約数の個数: 48

約数和(自身を含む): 32065600

約数和(自身を除く): 13332379

約数列:

[1, 3, 9, 13, 19, 27, 39, 53, 57, 117, 159, 171, 247, 351, 477, 513, 689, 741, 1007, 1431, 2067, 2223, 2809, 3021, 6201, 6669, 8427, 9063, 13091, 18603, 25281, 27189, 36517, 39273, 53371, 75843, 109551, 117819, 160113, 328653, 353457, 480339, 693823, 985959, 1441017, 2081469, 6244407, 18733221]

約数ペア:

[(1, 18733221), (3, 6244407), (9, 2081469), (13, 1441017), (19, 985959), (27, 693823), (39, 480339), (53, 353457), (57, 328653), (117, 160113), (159, 117819), (171, 109551), (247, 75843), (351, 53371), (477, 39273), (513, 36517), (689, 27189), (741, 25281), (1007, 18603), (1431, 13091), (2067, 9063), (2223, 8427), (2809, 6669), (3021, 6201)]