20388165

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{27739}}^1$

素因数の和:27761

約数の個数: 24

約数和(自身を含む): 37948320

約数和(自身を除く): 17560155

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 27739, 83217, 138695, 194173, 416085, 582519, 970865, 1359211, 2912595, 4077633, 6796055, 20388165]

約数ペア:

[(1, 20388165), (3, 6796055), (5, 4077633), (7, 2912595), (15, 1359211), (21, 970865), (35, 582519), (49, 416085), (105, 194173), (147, 138695), (245, 83217), (735, 27739)]