21151816

素因数分解:

$2^3\times 7^1\times {\mathrm{377711}}^1$

素因数の和:377724

約数の個数: 16

約数和(自身を含む): 45325440

約数和(自身を除く): 24173624

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 377711, 755422, 1510844, 2643977, 3021688, 5287954, 10575908, 21151816]

約数ペア:

[(1, 21151816), (2, 10575908), (4, 5287954), (7, 3021688), (8, 2643977), (14, 1510844), (28, 755422), (56, 377711)]