20409368

素因数分解:

$2^3\times 7^1\times {\mathrm{83}}^1\times {\mathrm{4391}}^1$

素因数の和:4487

約数の個数: 32

約数和(自身を含む): 44271360

約数和(自身を除く): 23861992

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 83, 166, 332, 581, 664, 1162, 2324, 4391, 4648, 8782, 17564, 30737, 35128, 61474, 122948, 245896, 364453, 728906, 1457812, 2551171, 2915624, 5102342, 10204684, 20409368]

約数ペア:

[(1, 20409368), (2, 10204684), (4, 5102342), (7, 2915624), (8, 2551171), (14, 1457812), (28, 728906), (56, 364453), (83, 245896), (166, 122948), (332, 61474), (581, 35128), (664, 30737), (1162, 17564), (2324, 8782), (4391, 4648)]