20239720

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1039}}^1$

素因数の和:1537

約数の個数: 32

約数和(自身を含む): 45676800

約数和(自身を除く): 25437080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1039, 1948, 2078, 2435, 3896, 4156, 4870, 5195, 8312, 9740, 10390, 19480, 20780, 41560, 505993, 1011986, 2023972, 2529965, 4047944, 5059930, 10119860, 20239720]

約数ペア:

[(1, 20239720), (2, 10119860), (4, 5059930), (5, 4047944), (8, 2529965), (10, 2023972), (20, 1011986), (40, 505993), (487, 41560), (974, 20780), (1039, 19480), (1948, 10390), (2078, 9740), (2435, 8312), (3896, 5195), (4156, 4870)]