21132828

素因数分解:

$2^2\times 3^2\times {\mathrm{157}}^1\times {\mathrm{3739}}^1$

素因数の和:3906

約数の個数: 36

約数和(自身を含む): 53773720

約数和(自身を除く): 32640892

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 157, 314, 471, 628, 942, 1413, 1884, 2826, 3739, 5652, 7478, 11217, 14956, 22434, 33651, 44868, 67302, 134604, 587023, 1174046, 1761069, 2348092, 3522138, 5283207, 7044276, 10566414, 21132828]

約数ペア:

[(1, 21132828), (2, 10566414), (3, 7044276), (4, 5283207), (6, 3522138), (9, 2348092), (12, 1761069), (18, 1174046), (36, 587023), (157, 134604), (314, 67302), (471, 44868), (628, 33651), (942, 22434), (1413, 14956), (1884, 11217), (2826, 7478), (3739, 5652)]