21003886

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{1609}}^1$

素因数の和:1779

約数の個数: 16

約数和(自身を含む): 32341680

約数和(自身を除く): 11337794

約数列:

[1, 2, 61, 107, 122, 214, 1609, 3218, 6527, 13054, 98149, 172163, 196298, 344326, 10501943, 21003886]

約数ペア:

[(1, 21003886), (2, 10501943), (61, 344326), (107, 196298), (122, 172163), (214, 98149), (1609, 13054), (3218, 6527)]