20885720

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{2917}}^1$

素因数の和:3107

約数の個数: 32

約数和(自身を含む): 47271600

約数和(自身を除く): 26385880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 358, 716, 895, 1432, 1790, 2917, 3580, 5834, 7160, 11668, 14585, 23336, 29170, 58340, 116680, 522143, 1044286, 2088572, 2610715, 4177144, 5221430, 10442860, 20885720]

約数ペア:

[(1, 20885720), (2, 10442860), (4, 5221430), (5, 4177144), (8, 2610715), (10, 2088572), (20, 1044286), (40, 522143), (179, 116680), (358, 58340), (716, 29170), (895, 23336), (1432, 14585), (1790, 11668), (2917, 7160), (3580, 5834)]