18979004176

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{887}}^1\times {\mathrm{1993}}^1$

素因数の和:2960

約数の個数: 80

約数和(自身を含む): 40838779008

約数和(自身を除く): 21859774832

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 61, 88, 122, 176, 244, 488, 671, 887, 976, 1342, 1774, 1993, 2684, 3548, 3986, 5368, 7096, 7972, 9757, 10736, 14192, 15944, 19514, 21923, 31888, 39028, 43846, 54107, 78056, 87692, 108214, 121573, 156112, 175384, 216428, 243146, 350768, 432856, 486292, 595177, 865712, 972584, 1190354, 1337303, 1767791, 1945168, 2380708, 2674606, 3535582, 4761416, 5349212, 7071164, 9522832, 10698424, 14142328, 19445701, 21396848, 28284656, 38891402, 77782804, 107835251, 155565608, 215670502, 311131216, 431341004, 862682008, 1186187761, 1725364016, 2372375522, 4744751044, 9489502088, 18979004176]

約数ペア:

[(1, 18979004176), (2, 9489502088), (4, 4744751044), (8, 2372375522), (11, 1725364016), (16, 1186187761), (22, 862682008), (44, 431341004), (61, 311131216), (88, 215670502), (122, 155565608), (176, 107835251), (244, 77782804), (488, 38891402), (671, 28284656), (887, 21396848), (976, 19445701), (1342, 14142328), (1774, 10698424), (1993, 9522832), (2684, 7071164), (3548, 5349212), (3986, 4761416), (5368, 3535582), (7096, 2674606), (7972, 2380708), (9757, 1945168), (10736, 1767791), (14192, 1337303), (15944, 1190354), (19514, 972584), (21923, 865712), (31888, 595177), (39028, 486292), (43846, 432856), (54107, 350768), (78056, 243146), (87692, 216428), (108214, 175384), (121573, 156112)]