19880339520

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{997}}^1\times {\mathrm{20771}}^1$

素因数の和:21788

約数の個数: 112

約数和(自身を含む): 63186429888

約数和(自身を除く): 43306090368

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 160, 192, 240, 320, 480, 960, 997, 1994, 2991, 3988, 4985, 5982, 7976, 9970, 11964, 14955, 15952, 19940, 20771, 23928, 29910, 31904, 39880, 41542, 47856, 59820, 62313, 63808, 79760, 83084, 95712, 103855, 119640, 124626, 159520, 166168, 191424, 207710, 239280, 249252, 311565, 319040, 332336, 415420, 478560, 498504, 623130, 664672, 830840, 957120, 997008, 1246260, 1329344, 1661680, 1994016, 2492520, 3323360, 3988032, 4985040, 6646720, 9970080, 19940160, 20708687, 41417374, 62126061, 82834748, 103543435, 124252122, 165669496, 207086870, 248504244, 310630305, 331338992, 414173740, 497008488, 621260610, 662677984, 828347480, 994016976, 1242521220, 1325355968, 1656694960, 1988033952, 2485042440, 3313389920, 3976067904, 4970084880, 6626779840, 9940169760, 19880339520]

約数ペア:

[(1, 19880339520), (2, 9940169760), (3, 6626779840), (4, 4970084880), (5, 3976067904), (6, 3313389920), (8, 2485042440), (10, 1988033952), (12, 1656694960), (15, 1325355968), (16, 1242521220), (20, 994016976), (24, 828347480), (30, 662677984), (32, 621260610), (40, 497008488), (48, 414173740), (60, 331338992), (64, 310630305), (80, 248504244), (96, 207086870), (120, 165669496), (160, 124252122), (192, 103543435), (240, 82834748), (320, 62126061), (480, 41417374), (960, 20708687), (997, 19940160), (1994, 9970080), (2991, 6646720), (3988, 4985040), (4985, 3988032), (5982, 3323360), (7976, 2492520), (9970, 1994016), (11964, 1661680), (14955, 1329344), (15952, 1246260), (19940, 997008), (20771, 957120), (23928, 830840), (29910, 664672), (31904, 623130), (39880, 498504), (41542, 478560), (47856, 415420), (59820, 332336), (62313, 319040), (63808, 311565), (79760, 249252), (83084, 239280), (95712, 207710), (103855, 191424), (119640, 166168), (124626, 159520)]