7779940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{911}}^1$

素因数の和:988

約数の個数: 48

約数和(自身を含む): 18998784

約数和(自身を除く): 11218844

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 911, 1220, 1708, 1822, 2135, 3644, 4270, 4555, 6377, 8540, 9110, 12754, 18220, 25508, 31885, 55571, 63770, 111142, 127540, 222284, 277855, 388997, 555710, 777994, 1111420, 1555988, 1944985, 3889970, 7779940]

約数ペア:

[(1, 7779940), (2, 3889970), (4, 1944985), (5, 1555988), (7, 1111420), (10, 777994), (14, 555710), (20, 388997), (28, 277855), (35, 222284), (61, 127540), (70, 111142), (122, 63770), (140, 55571), (244, 31885), (305, 25508), (427, 18220), (610, 12754), (854, 9110), (911, 8540), (1220, 6377), (1708, 4555), (1822, 4270), (2135, 3644)]