20009968

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:166

約数の個数: 80

約数和(自身を含む): 44997120

約数和(自身を除く): 24987152

約数列:

[1, 2, 4, 8, 11, 16, 22, 41, 44, 47, 59, 82, 88, 94, 118, 164, 176, 188, 236, 328, 376, 451, 472, 517, 649, 656, 752, 902, 944, 1034, 1298, 1804, 1927, 2068, 2419, 2596, 2773, 3608, 3854, 4136, 4838, 5192, 5546, 7216, 7708, 8272, 9676, 10384, 11092, 15416, 19352, 21197, 22184, 26609, 30503, 30832, 38704, 42394, 44368, 53218, 61006, 84788, 106436, 113693, 122012, 169576, 212872, 227386, 244024, 339152, 425744, 454772, 488048, 909544, 1250623, 1819088, 2501246, 5002492, 10004984, 20009968]

約数ペア:

[(1, 20009968), (2, 10004984), (4, 5002492), (8, 2501246), (11, 1819088), (16, 1250623), (22, 909544), (41, 488048), (44, 454772), (47, 425744), (59, 339152), (82, 244024), (88, 227386), (94, 212872), (118, 169576), (164, 122012), (176, 113693), (188, 106436), (236, 84788), (328, 61006), (376, 53218), (451, 44368), (472, 42394), (517, 38704), (649, 30832), (656, 30503), (752, 26609), (902, 22184), (944, 21197), (1034, 19352), (1298, 15416), (1804, 11092), (1927, 10384), (2068, 9676), (2419, 8272), (2596, 7708), (2773, 7216), (3608, 5546), (3854, 5192), (4136, 4838)]