21728358

素因数分解:

$2^1\times 3^3\times {\mathrm{211}}^1\times {\mathrm{1907}}^1$

素因数の和:2129

約数の個数: 32

約数和(自身を含む): 48539520

約数和(自身を除く): 26811162

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 211, 422, 633, 1266, 1899, 1907, 3798, 3814, 5697, 5721, 11394, 11442, 17163, 34326, 51489, 102978, 402377, 804754, 1207131, 2414262, 3621393, 7242786, 10864179, 21728358]

約数ペア:

[(1, 21728358), (2, 10864179), (3, 7242786), (6, 3621393), (9, 2414262), (18, 1207131), (27, 804754), (54, 402377), (211, 102978), (422, 51489), (633, 34326), (1266, 17163), (1899, 11442), (1907, 11394), (3798, 5721), (3814, 5697)]