20685080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39779}}^1$

素因数の和:39803

約数の個数: 32

約数和(自身を含む): 50122800

約数和(自身を除く): 29437720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39779, 79558, 159116, 198895, 318232, 397790, 517127, 795580, 1034254, 1591160, 2068508, 2585635, 4137016, 5171270, 10342540, 20685080]

約数ペア:

[(1, 20685080), (2, 10342540), (4, 5171270), (5, 4137016), (8, 2585635), (10, 2068508), (13, 1591160), (20, 1034254), (26, 795580), (40, 517127), (52, 397790), (65, 318232), (104, 198895), (130, 159116), (260, 79558), (520, 39779)]