18991170042

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{111533}}^1$

素因数の和:111647

約数の個数: 64

約数和(自身を含む): 42721983360

約数和(自身を除く): 23730813318

約数列:

[1, 2, 3, 6, 13, 26, 37, 39, 59, 74, 78, 111, 118, 177, 222, 354, 481, 767, 962, 1443, 1534, 2183, 2301, 2886, 4366, 4602, 6549, 13098, 28379, 56758, 85137, 111533, 170274, 223066, 334599, 669198, 1449929, 2899858, 4126721, 4349787, 6580447, 8253442, 8699574, 12380163, 13160894, 19741341, 24760326, 39482682, 53647373, 85545811, 107294746, 160942119, 171091622, 243476539, 256637433, 321884238, 486953078, 513274866, 730429617, 1460859234, 3165195007, 6330390014, 9495585021, 18991170042]

約数ペア:

[(1, 18991170042), (2, 9495585021), (3, 6330390014), (6, 3165195007), (13, 1460859234), (26, 730429617), (37, 513274866), (39, 486953078), (59, 321884238), (74, 256637433), (78, 243476539), (111, 171091622), (118, 160942119), (177, 107294746), (222, 85545811), (354, 53647373), (481, 39482682), (767, 24760326), (962, 19741341), (1443, 13160894), (1534, 12380163), (2183, 8699574), (2301, 8253442), (2886, 6580447), (4366, 4349787), (4602, 4126721), (6549, 2899858), (13098, 1449929), (28379, 669198), (56758, 334599), (85137, 223066), (111533, 170274)]