281402520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{643}}^1$

素因数の和:1185

約数の個数: 128

約数和(自身を含む): 968163840

約数和(自身を除く): 686761320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 521, 643, 840, 1042, 1286, 1563, 1929, 2084, 2572, 2605, 3126, 3215, 3647, 3858, 4168, 4501, 5144, 5210, 6252, 6430, 7294, 7716, 7815, 9002, 9645, 10420, 10941, 12504, 12860, 13503, 14588, 15432, 15630, 18004, 18235, 19290, 20840, 21882, 22505, 25720, 27006, 29176, 31260, 36008, 36470, 38580, 43764, 45010, 54012, 54705, 62520, 67515, 72940, 77160, 87528, 90020, 108024, 109410, 135030, 145880, 180040, 218820, 270060, 335003, 437640, 540120, 670006, 1005009, 1340012, 1675015, 2010018, 2345021, 2680024, 3350030, 4020036, 4690042, 5025045, 6700060, 7035063, 8040072, 9380084, 10050090, 11725105, 13400120, 14070126, 18760168, 20100180, 23450210, 28140252, 35175315, 40200360, 46900420, 56280504, 70350630, 93800840, 140701260, 281402520]

約数ペア:

[(1, 281402520), (2, 140701260), (3, 93800840), (4, 70350630), (5, 56280504), (6, 46900420), (7, 40200360), (8, 35175315), (10, 28140252), (12, 23450210), (14, 20100180), (15, 18760168), (20, 14070126), (21, 13400120), (24, 11725105), (28, 10050090), (30, 9380084), (35, 8040072), (40, 7035063), (42, 6700060), (56, 5025045), (60, 4690042), (70, 4020036), (84, 3350030), (105, 2680024), (120, 2345021), (140, 2010018), (168, 1675015), (210, 1340012), (280, 1005009), (420, 670006), (521, 540120), (643, 437640), (840, 335003), (1042, 270060), (1286, 218820), (1563, 180040), (1929, 145880), (2084, 135030), (2572, 109410), (2605, 108024), (3126, 90020), (3215, 87528), (3647, 77160), (3858, 72940), (4168, 67515), (4501, 62520), (5144, 54705), (5210, 54012), (6252, 45010), (6430, 43764), (7294, 38580), (7716, 36470), (7815, 36008), (9002, 31260), (9645, 29176), (10420, 27006), (10941, 25720), (12504, 22505), (12860, 21882), (13503, 20840), (14588, 19290), (15432, 18235), (15630, 18004)]