15559880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{911}}^1$

素因数の和:990

約数の個数: 64

約数和(自身を含む): 40711680

約数和(自身を除く): 25151800

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, 911, 1220, 1708, 1822, 2135, 2440, 3416, 3644, 4270, 4555, 6377, 7288, 8540, 9110, 12754, 17080, 18220, 25508, 31885, 36440, 51016, 55571, 63770, 111142, 127540, 222284, 255080, 277855, 388997, 444568, 555710, 777994, 1111420, 1555988, 1944985, 2222840, 3111976, 3889970, 7779940, 15559880]

約数ペア:

[(1, 15559880), (2, 7779940), (4, 3889970), (5, 3111976), (7, 2222840), (8, 1944985), (10, 1555988), (14, 1111420), (20, 777994), (28, 555710), (35, 444568), (40, 388997), (56, 277855), (61, 255080), (70, 222284), (122, 127540), (140, 111142), (244, 63770), (280, 55571), (305, 51016), (427, 36440), (488, 31885), (610, 25508), (854, 18220), (911, 17080), (1220, 12754), (1708, 9110), (1822, 8540), (2135, 7288), (2440, 6377), (3416, 4555), (3644, 4270)]