257031420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{1999}}^1\times {\mathrm{2143}}^1$

素因数の和:4154

約数の個数: 48

約数和(自身を含む): 720384000

約数和(自身を除く): 463352580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1999, 2143, 3998, 4286, 5997, 6429, 7996, 8572, 9995, 10715, 11994, 12858, 19990, 21430, 23988, 25716, 29985, 32145, 39980, 42860, 59970, 64290, 119940, 128580, 4283857, 8567714, 12851571, 17135428, 21419285, 25703142, 42838570, 51406284, 64257855, 85677140, 128515710, 257031420]

約数ペア:

[(1, 257031420), (2, 128515710), (3, 85677140), (4, 64257855), (5, 51406284), (6, 42838570), (10, 25703142), (12, 21419285), (15, 17135428), (20, 12851571), (30, 8567714), (60, 4283857), (1999, 128580), (2143, 119940), (3998, 64290), (4286, 59970), (5997, 42860), (6429, 39980), (7996, 32145), (8572, 29985), (9995, 25716), (10715, 23988), (11994, 21430), (12858, 19990)]