21128481

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{457}}^1\times {\mathrm{467}}^1$

素因数の和:941

約数の個数: 24

約数和(自身を含む): 33437664

約数和(自身を除く): 12309183

約数列:

[1, 3, 9, 11, 33, 99, 457, 467, 1371, 1401, 4113, 4203, 5027, 5137, 15081, 15411, 45243, 46233, 213419, 640257, 1920771, 2347609, 7042827, 21128481]

約数ペア:

[(1, 21128481), (3, 7042827), (9, 2347609), (11, 1920771), (33, 640257), (99, 213419), (457, 46233), (467, 45243), (1371, 15411), (1401, 15081), (4113, 5137), (4203, 5027)]