640857560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{9497}}^1$

素因数の和:9756

約数の個数: 64

約数和(自身を含む): 1654931520

約数和(自身を除く): 1014073960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 241, 280, 482, 964, 1205, 1687, 1928, 2410, 3374, 4820, 6748, 8435, 9497, 9640, 13496, 16870, 18994, 33740, 37988, 47485, 66479, 67480, 75976, 94970, 132958, 189940, 265916, 332395, 379880, 531832, 664790, 1329580, 2288777, 2659160, 4577554, 9155108, 11443885, 16021439, 18310216, 22887770, 32042878, 45775540, 64085756, 80107195, 91551080, 128171512, 160214390, 320428780, 640857560]

約数ペア:

[(1, 640857560), (2, 320428780), (4, 160214390), (5, 128171512), (7, 91551080), (8, 80107195), (10, 64085756), (14, 45775540), (20, 32042878), (28, 22887770), (35, 18310216), (40, 16021439), (56, 11443885), (70, 9155108), (140, 4577554), (241, 2659160), (280, 2288777), (482, 1329580), (964, 664790), (1205, 531832), (1687, 379880), (1928, 332395), (2410, 265916), (3374, 189940), (4820, 132958), (6748, 94970), (8435, 75976), (9497, 67480), (9640, 66479), (13496, 47485), (16870, 37988), (18994, 33740)]