21691528

素因数分解:

$2^3\times {\mathrm{97}}^1\times {\mathrm{27953}}^1$

素因数の和:28056

約数の個数: 16

約数和(自身を含む): 41092380

約数和(自身を除く): 19400852

約数列:

[1, 2, 4, 8, 97, 194, 388, 776, 27953, 55906, 111812, 223624, 2711441, 5422882, 10845764, 21691528]

約数ペア:

[(1, 21691528), (2, 10845764), (4, 5422882), (8, 2711441), (97, 223624), (194, 111812), (388, 55906), (776, 27953)]