1559220

素因数分解:

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

素因数の和:2024

約数の個数: 48

約数和(自身を含む): 4704000

約数和(自身を除く): 3144780

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 1999, 3998, 5997, 7996, 9995, 11994, 19990, 23988, 25987, 29985, 39980, 51974, 59970, 77961, 103948, 119940, 129935, 155922, 259870, 311844, 389805, 519740, 779610, 1559220]

約数ペア:

[(1, 1559220), (2, 779610), (3, 519740), (4, 389805), (5, 311844), (6, 259870), (10, 155922), (12, 129935), (13, 119940), (15, 103948), (20, 77961), (26, 59970), (30, 51974), (39, 39980), (52, 29985), (60, 25987), (65, 23988), (78, 19990), (130, 11994), (156, 9995), (195, 7996), (260, 5997), (390, 3998), (780, 1999)]