18991232

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{113}}^1$

素因数の和:241

約数の個数: 64

約数和(自身を含む): 41511960

約数和(自身を除く): 22520728

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 101, 104, 113, 128, 202, 208, 226, 404, 416, 452, 808, 832, 904, 1313, 1469, 1616, 1664, 1808, 2626, 2938, 3232, 3616, 5252, 5876, 6464, 7232, 10504, 11413, 11752, 12928, 14464, 21008, 22826, 23504, 42016, 45652, 47008, 84032, 91304, 94016, 148369, 168064, 182608, 188032, 296738, 365216, 593476, 730432, 1186952, 1460864, 2373904, 4747808, 9495616, 18991232]

約数ペア:

[(1, 18991232), (2, 9495616), (4, 4747808), (8, 2373904), (13, 1460864), (16, 1186952), (26, 730432), (32, 593476), (52, 365216), (64, 296738), (101, 188032), (104, 182608), (113, 168064), (128, 148369), (202, 94016), (208, 91304), (226, 84032), (404, 47008), (416, 45652), (452, 42016), (808, 23504), (832, 22826), (904, 21008), (1313, 14464), (1469, 12928), (1616, 11752), (1664, 11413), (1808, 10504), (2626, 7232), (2938, 6464), (3232, 5876), (3616, 5252)]