12111905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1$

素因数の和:245

約数の個数: 32

約数和(自身を含む): 16892064

約数和(自身を除く): 4780159

約数列:

[1, 5, 13, 17, 65, 85, 97, 113, 221, 485, 565, 1105, 1261, 1469, 1649, 1921, 6305, 7345, 8245, 9605, 10961, 21437, 24973, 54805, 107185, 124865, 142493, 186337, 712465, 931685, 2422381, 12111905]

約数ペア:

[(1, 12111905), (5, 2422381), (13, 931685), (17, 712465), (65, 186337), (85, 142493), (97, 124865), (113, 107185), (221, 54805), (485, 24973), (565, 21437), (1105, 10961), (1261, 9605), (1469, 8245), (1649, 7345), (1921, 6305)]