17990181

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{331}}^1$

素因数の和:415

約数の個数: 40

約数和(自身を含む): 29887968

約数和(自身を除く): 11897787

約数列:

[1, 3, 9, 11, 27, 33, 61, 81, 99, 183, 297, 331, 549, 671, 891, 993, 1647, 2013, 2979, 3641, 4941, 6039, 8937, 10923, 18117, 20191, 26811, 32769, 54351, 60573, 98307, 181719, 222101, 294921, 545157, 666303, 1635471, 1998909, 5996727, 17990181]

約数ペア:

[(1, 17990181), (3, 5996727), (9, 1998909), (11, 1635471), (27, 666303), (33, 545157), (61, 294921), (81, 222101), (99, 181719), (183, 98307), (297, 60573), (331, 54351), (549, 32769), (671, 26811), (891, 20191), (993, 18117), (1647, 10923), (2013, 8937), (2979, 6039), (3641, 4941)]