19781388

素因数分解:

$2^2\times 3^3\times {\mathrm{11}}^1\times {\mathrm{16651}}^1$

素因数の和:16675

約数の個数: 48

約数和(自身を含む): 55950720

約数和(自身を除く): 36169332

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 27, 33, 36, 44, 54, 66, 99, 108, 132, 198, 297, 396, 594, 1188, 16651, 33302, 49953, 66604, 99906, 149859, 183161, 199812, 299718, 366322, 449577, 549483, 599436, 732644, 899154, 1098966, 1648449, 1798308, 2197932, 3296898, 4945347, 6593796, 9890694, 19781388]

約数ペア:

[(1, 19781388), (2, 9890694), (3, 6593796), (4, 4945347), (6, 3296898), (9, 2197932), (11, 1798308), (12, 1648449), (18, 1098966), (22, 899154), (27, 732644), (33, 599436), (36, 549483), (44, 449577), (54, 366322), (66, 299718), (99, 199812), (108, 183161), (132, 149859), (198, 99906), (297, 66604), (396, 49953), (594, 33302), (1188, 16651)]