281621120

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{367}}^1$

素因数の和:506

約数の個数: 128

約数和(自身を含む): 743212800

約数和(自身を除く): 461591680

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 109, 110, 128, 160, 176, 218, 220, 320, 352, 367, 436, 440, 545, 640, 704, 734, 872, 880, 1090, 1199, 1408, 1468, 1744, 1760, 1835, 2180, 2398, 2936, 3488, 3520, 3670, 4037, 4360, 4796, 5872, 5995, 6976, 7040, 7340, 8074, 8720, 9592, 11744, 11990, 13952, 14680, 16148, 17440, 19184, 20185, 23488, 23980, 29360, 32296, 34880, 38368, 40003, 40370, 46976, 47960, 58720, 64592, 69760, 76736, 80006, 80740, 95920, 117440, 129184, 153472, 160012, 161480, 191840, 200015, 234880, 258368, 320024, 322960, 383680, 400030, 440033, 516736, 640048, 645920, 767360, 800060, 880066, 1280096, 1291840, 1600120, 1760132, 2200165, 2560192, 2583680, 3200240, 3520264, 4400330, 5120384, 6400480, 7040528, 8800660, 12800960, 14081056, 17601320, 25601920, 28162112, 35202640, 56324224, 70405280, 140810560, 281621120]

約数ペア:

[(1, 281621120), (2, 140810560), (4, 70405280), (5, 56324224), (8, 35202640), (10, 28162112), (11, 25601920), (16, 17601320), (20, 14081056), (22, 12800960), (32, 8800660), (40, 7040528), (44, 6400480), (55, 5120384), (64, 4400330), (80, 3520264), (88, 3200240), (109, 2583680), (110, 2560192), (128, 2200165), (160, 1760132), (176, 1600120), (218, 1291840), (220, 1280096), (320, 880066), (352, 800060), (367, 767360), (436, 645920), (440, 640048), (545, 516736), (640, 440033), (704, 400030), (734, 383680), (872, 322960), (880, 320024), (1090, 258368), (1199, 234880), (1408, 200015), (1468, 191840), (1744, 161480), (1760, 160012), (1835, 153472), (2180, 129184), (2398, 117440), (2936, 95920), (3488, 80740), (3520, 80006), (3670, 76736), (4037, 69760), (4360, 64592), (4796, 58720), (5872, 47960), (5995, 46976), (6976, 40370), (7040, 40003), (7340, 38368), (8074, 34880), (8720, 32296), (9592, 29360), (11744, 23980), (11990, 23488), (13952, 20185), (14680, 19184), (16148, 17440)]