20744280

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1987}}^1$

素因数の和:2033

約数の個数: 96

約数和(自身を含む): 69778800

約数和(自身を除く): 49034520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 29, 30, 36, 40, 45, 58, 60, 72, 87, 90, 116, 120, 145, 174, 180, 232, 261, 290, 348, 360, 435, 522, 580, 696, 870, 1044, 1160, 1305, 1740, 1987, 2088, 2610, 3480, 3974, 5220, 5961, 7948, 9935, 10440, 11922, 15896, 17883, 19870, 23844, 29805, 35766, 39740, 47688, 57623, 59610, 71532, 79480, 89415, 115246, 119220, 143064, 172869, 178830, 230492, 238440, 288115, 345738, 357660, 460984, 518607, 576230, 691476, 715320, 864345, 1037214, 1152460, 1382952, 1728690, 2074428, 2304920, 2593035, 3457380, 4148856, 5186070, 6914760, 10372140, 20744280]

約数ペア:

[(1, 20744280), (2, 10372140), (3, 6914760), (4, 5186070), (5, 4148856), (6, 3457380), (8, 2593035), (9, 2304920), (10, 2074428), (12, 1728690), (15, 1382952), (18, 1152460), (20, 1037214), (24, 864345), (29, 715320), (30, 691476), (36, 576230), (40, 518607), (45, 460984), (58, 357660), (60, 345738), (72, 288115), (87, 238440), (90, 230492), (116, 178830), (120, 172869), (145, 143064), (174, 119220), (180, 115246), (232, 89415), (261, 79480), (290, 71532), (348, 59610), (360, 57623), (435, 47688), (522, 39740), (580, 35766), (696, 29805), (870, 23844), (1044, 19870), (1160, 17883), (1305, 15896), (1740, 11922), (1987, 10440), (2088, 9935), (2610, 7948), (3480, 5961), (3974, 5220)]