28421320

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1459}}^1$

素因数の和:1957

約数の個数: 32

約数和(自身を含む): 64123200

約数和(自身を除く): 35701880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1459, 1948, 2435, 2918, 3896, 4870, 5836, 7295, 9740, 11672, 14590, 19480, 29180, 58360, 710533, 1421066, 2842132, 3552665, 5684264, 7105330, 14210660, 28421320]

約数ペア:

[(1, 28421320), (2, 14210660), (4, 7105330), (5, 5684264), (8, 3552665), (10, 2842132), (20, 1421066), (40, 710533), (487, 58360), (974, 29180), (1459, 19480), (1948, 14590), (2435, 11672), (2918, 9740), (3896, 7295), (4870, 5836)]