21513656

素因数分解:

$2^3\times {\mathrm{491}}^1\times {\mathrm{5477}}^1$

素因数の和:5974

約数の個数: 16

約数和(自身を含む): 40427640

約数和(自身を除く): 18913984

約数列:

[1, 2, 4, 8, 491, 982, 1964, 3928, 5477, 10954, 21908, 43816, 2689207, 5378414, 10756828, 21513656]

約数ペア:

[(1, 21513656), (2, 10756828), (4, 5378414), (8, 2689207), (491, 43816), (982, 21908), (1964, 10954), (3928, 5477)]