20019720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23833}}^1$

素因数の和:23854

約数の個数: 64

約数和(自身を含む): 68641920

約数和(自身を除く): 48622200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 23833, 47666, 71499, 95332, 119165, 142998, 166831, 190664, 238330, 285996, 333662, 357495, 476660, 500493, 571992, 667324, 714990, 834155, 953320, 1000986, 1334648, 1429980, 1668310, 2001972, 2502465, 2859960, 3336620, 4003944, 5004930, 6673240, 10009860, 20019720]

約数ペア:

[(1, 20019720), (2, 10009860), (3, 6673240), (4, 5004930), (5, 4003944), (6, 3336620), (7, 2859960), (8, 2502465), (10, 2001972), (12, 1668310), (14, 1429980), (15, 1334648), (20, 1000986), (21, 953320), (24, 834155), (28, 714990), (30, 667324), (35, 571992), (40, 500493), (42, 476660), (56, 357495), (60, 333662), (70, 285996), (84, 238330), (105, 190664), (120, 166831), (140, 142998), (168, 119165), (210, 95332), (280, 71499), (420, 47666), (840, 23833)]