21157284

素因数分解:

$2^2\times 3^1\times {\mathrm{347}}^1\times {\mathrm{5081}}^1$

素因数の和:5435

約数の個数: 24

約数和(自身を含む): 49519008

約数和(自身を除く): 28361724

約数列:

[1, 2, 3, 4, 6, 12, 347, 694, 1041, 1388, 2082, 4164, 5081, 10162, 15243, 20324, 30486, 60972, 1763107, 3526214, 5289321, 7052428, 10578642, 21157284]

約数ペア:

[(1, 21157284), (2, 10578642), (3, 7052428), (4, 5289321), (6, 3526214), (12, 1763107), (347, 60972), (694, 30486), (1041, 20324), (1388, 15243), (2082, 10162), (4164, 5081)]