20938492048

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{277}}^1\times {\mathrm{1889}}^1$

素因数の和:2276

約数の個数: 80

約数和(自身を含む): 42414004080

約数和(自身を除く): 21475512032

約数列:

[1, 2, 4, 8, 16, 41, 61, 82, 122, 164, 244, 277, 328, 488, 554, 656, 976, 1108, 1889, 2216, 2501, 3778, 4432, 5002, 7556, 10004, 11357, 15112, 16897, 20008, 22714, 30224, 33794, 40016, 45428, 67588, 77449, 90856, 115229, 135176, 154898, 181712, 230458, 270352, 309796, 460916, 523253, 619592, 692777, 921832, 1046506, 1239184, 1385554, 1843664, 2093012, 2771108, 4186024, 4724389, 5542216, 8372048, 9448778, 11084432, 18897556, 21453373, 31918433, 37795112, 42906746, 63836866, 75590224, 85813492, 127673732, 171626984, 255347464, 343253968, 510694928, 1308655753, 2617311506, 5234623012, 10469246024, 20938492048]

約数ペア:

[(1, 20938492048), (2, 10469246024), (4, 5234623012), (8, 2617311506), (16, 1308655753), (41, 510694928), (61, 343253968), (82, 255347464), (122, 171626984), (164, 127673732), (244, 85813492), (277, 75590224), (328, 63836866), (488, 42906746), (554, 37795112), (656, 31918433), (976, 21453373), (1108, 18897556), (1889, 11084432), (2216, 9448778), (2501, 8372048), (3778, 5542216), (4432, 4724389), (5002, 4186024), (7556, 2771108), (10004, 2093012), (11357, 1843664), (15112, 1385554), (16897, 1239184), (20008, 1046506), (22714, 921832), (30224, 692777), (33794, 619592), (40016, 523253), (45428, 460916), (67588, 309796), (77449, 270352), (90856, 230458), (115229, 181712), (135176, 154898)]