20408745

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{27767}}^1$

素因数の和:27789

約数の個数: 24

約数和(自身を含む): 37986624

約数和(自身を除く): 17577879

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 27767, 83301, 138835, 194369, 416505, 583107, 971845, 1360583, 2915535, 4081749, 6802915, 20408745]

約数ペア:

[(1, 20408745), (3, 6802915), (5, 4081749), (7, 2915535), (15, 1360583), (21, 971845), (35, 583107), (49, 416505), (105, 194369), (147, 138835), (245, 83301), (735, 27767)]