20269860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1999}}^1$

素因数の和:2037

約数の個数: 72

約数和(自身を含む): 61488000

約数和(自身を除く): 41218140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 260, 338, 390, 507, 676, 780, 845, 1014, 1690, 1999, 2028, 2535, 3380, 3998, 5070, 5997, 7996, 9995, 10140, 11994, 19990, 23988, 25987, 29985, 39980, 51974, 59970, 77961, 103948, 119940, 129935, 155922, 259870, 311844, 337831, 389805, 519740, 675662, 779610, 1013493, 1351324, 1559220, 1689155, 2026986, 3378310, 4053972, 5067465, 6756620, 10134930, 20269860]

約数ペア:

[(1, 20269860), (2, 10134930), (3, 6756620), (4, 5067465), (5, 4053972), (6, 3378310), (10, 2026986), (12, 1689155), (13, 1559220), (15, 1351324), (20, 1013493), (26, 779610), (30, 675662), (39, 519740), (52, 389805), (60, 337831), (65, 311844), (78, 259870), (130, 155922), (156, 129935), (169, 119940), (195, 103948), (260, 77961), (338, 59970), (390, 51974), (507, 39980), (676, 29985), (780, 25987), (845, 23988), (1014, 19990), (1690, 11994), (1999, 10140), (2028, 9995), (2535, 7996), (3380, 5997), (3998, 5070)]