1557319720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^2\times {\mathrm{127}}^1$

素因数の和:240

約数の個数: 192

約数和(自身を含む): 4118169600

約数和(自身を除く): 2560849880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 31, 40, 44, 55, 58, 62, 88, 110, 116, 124, 127, 145, 155, 220, 232, 248, 254, 290, 310, 319, 341, 440, 508, 580, 620, 635, 638, 682, 899, 961, 1016, 1160, 1240, 1270, 1276, 1364, 1397, 1595, 1705, 1798, 1922, 2540, 2552, 2728, 2794, 3190, 3410, 3596, 3683, 3844, 3937, 4495, 4805, 5080, 5588, 6380, 6820, 6985, 7192, 7366, 7688, 7874, 8990, 9610, 9889, 10571, 11176, 12760, 13640, 13970, 14732, 15748, 17980, 18415, 19220, 19685, 19778, 21142, 27869, 27940, 29464, 31496, 35960, 36830, 38440, 39370, 39556, 40513, 42284, 43307, 49445, 52855, 55738, 55880, 73660, 78740, 79112, 81026, 84568, 86614, 98890, 105710, 111476, 114173, 122047, 139345, 147320, 157480, 162052, 173228, 197780, 202565, 211420, 216535, 222952, 228346, 244094, 278690, 306559, 324104, 346456, 395560, 405130, 422840, 433070, 456692, 488188, 557380, 570865, 610235, 613118, 810260, 866140, 913384, 976376, 1114760, 1141730, 1220470, 1226236, 1255903, 1342517, 1532795, 1620520, 1732280, 2283460, 2440940, 2452472, 2511806, 2685034, 3065590, 3539363, 4566920, 4881880, 5023612, 5370068, 6131180, 6279515, 6712585, 7078726, 10047224, 10740136, 12262360, 12559030, 13425170, 14157452, 17696815, 25118060, 26850340, 28314904, 35393630, 38932993, 50236120, 53700680, 70787260, 77865986, 141574520, 155731972, 194664965, 311463944, 389329930, 778659860, 1557319720]

約数ペア:

[(1, 1557319720), (2, 778659860), (4, 389329930), (5, 311463944), (8, 194664965), (10, 155731972), (11, 141574520), (20, 77865986), (22, 70787260), (29, 53700680), (31, 50236120), (40, 38932993), (44, 35393630), (55, 28314904), (58, 26850340), (62, 25118060), (88, 17696815), (110, 14157452), (116, 13425170), (124, 12559030), (127, 12262360), (145, 10740136), (155, 10047224), (220, 7078726), (232, 6712585), (248, 6279515), (254, 6131180), (290, 5370068), (310, 5023612), (319, 4881880), (341, 4566920), (440, 3539363), (508, 3065590), (580, 2685034), (620, 2511806), (635, 2452472), (638, 2440940), (682, 2283460), (899, 1732280), (961, 1620520), (1016, 1532795), (1160, 1342517), (1240, 1255903), (1270, 1226236), (1276, 1220470), (1364, 1141730), (1397, 1114760), (1595, 976376), (1705, 913384), (1798, 866140), (1922, 810260), (2540, 613118), (2552, 610235), (2728, 570865), (2794, 557380), (3190, 488188), (3410, 456692), (3596, 433070), (3683, 422840), (3844, 405130), (3937, 395560), (4495, 346456), (4805, 324104), (5080, 306559), (5588, 278690), (6380, 244094), (6820, 228346), (6985, 222952), (7192, 216535), (7366, 211420), (7688, 202565), (7874, 197780), (8990, 173228), (9610, 162052), (9889, 157480), (10571, 147320), (11176, 139345), (12760, 122047), (13640, 114173), (13970, 111476), (14732, 105710), (15748, 98890), (17980, 86614), (18415, 84568), (19220, 81026), (19685, 79112), (19778, 78740), (21142, 73660), (27869, 55880), (27940, 55738), (29464, 52855), (31496, 49445), (35960, 43307), (36830, 42284), (38440, 40513), (39370, 39556)]