1991691968

素因数分解:

$2^6\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{2351}}^1$

素因数の和:2462

約数の個数: 112

約数和(自身を含む): 4741029888

約数和(自身を除く): 2749337920

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 61, 62, 64, 112, 122, 124, 217, 224, 244, 248, 427, 434, 448, 488, 496, 854, 868, 976, 992, 1708, 1736, 1891, 1952, 1984, 2351, 3416, 3472, 3782, 3904, 4702, 6832, 6944, 7564, 9404, 13237, 13664, 13888, 15128, 16457, 18808, 26474, 27328, 30256, 32914, 37616, 52948, 60512, 65828, 72881, 75232, 105896, 121024, 131656, 143411, 145762, 150464, 211792, 263312, 286822, 291524, 423584, 510167, 526624, 573644, 583048, 847168, 1003877, 1020334, 1053248, 1147288, 1166096, 2007754, 2040668, 2294576, 2332192, 4015508, 4081336, 4445741, 4589152, 4664384, 8031016, 8162672, 8891482, 9178304, 16062032, 16325344, 17782964, 31120187, 32124064, 32650688, 35565928, 62240374, 64248128, 71131856, 124480748, 142263712, 248961496, 284527424, 497922992, 995845984, 1991691968]

約数ペア:

[(1, 1991691968), (2, 995845984), (4, 497922992), (7, 284527424), (8, 248961496), (14, 142263712), (16, 124480748), (28, 71131856), (31, 64248128), (32, 62240374), (56, 35565928), (61, 32650688), (62, 32124064), (64, 31120187), (112, 17782964), (122, 16325344), (124, 16062032), (217, 9178304), (224, 8891482), (244, 8162672), (248, 8031016), (427, 4664384), (434, 4589152), (448, 4445741), (488, 4081336), (496, 4015508), (854, 2332192), (868, 2294576), (976, 2040668), (992, 2007754), (1708, 1166096), (1736, 1147288), (1891, 1053248), (1952, 1020334), (1984, 1003877), (2351, 847168), (3416, 583048), (3472, 573644), (3782, 526624), (3904, 510167), (4702, 423584), (6832, 291524), (6944, 286822), (7564, 263312), (9404, 211792), (13237, 150464), (13664, 145762), (13888, 143411), (15128, 131656), (16457, 121024), (18808, 105896), (26474, 75232), (27328, 72881), (30256, 65828), (32914, 60512), (37616, 52948)]