66799880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{3911}}^1$

素因数の和:3990

約数の個数: 64

約数和(自身を含む): 174631680

約数和(自身を除く): 107831800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 61, 70, 122, 140, 244, 280, 305, 427, 488, 610, 854, 1220, 1708, 2135, 2440, 3416, 3911, 4270, 7822, 8540, 15644, 17080, 19555, 27377, 31288, 39110, 54754, 78220, 109508, 136885, 156440, 219016, 238571, 273770, 477142, 547540, 954284, 1095080, 1192855, 1669997, 1908568, 2385710, 3339994, 4771420, 6679988, 8349985, 9542840, 13359976, 16699970, 33399940, 66799880]

約数ペア:

[(1, 66799880), (2, 33399940), (4, 16699970), (5, 13359976), (7, 9542840), (8, 8349985), (10, 6679988), (14, 4771420), (20, 3339994), (28, 2385710), (35, 1908568), (40, 1669997), (56, 1192855), (61, 1095080), (70, 954284), (122, 547540), (140, 477142), (244, 273770), (280, 238571), (305, 219016), (427, 156440), (488, 136885), (610, 109508), (854, 78220), (1220, 54754), (1708, 39110), (2135, 31288), (2440, 27377), (3416, 19555), (3911, 17080), (4270, 15644), (7822, 8540)]