20974788

素因数分解:

$2^2\times 3^6\times {\mathrm{7193}}^1$

素因数の和:7215

約数の個数: 42

約数和(自身を含む): 55041294

約数和(自身を除く): 34066506

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 729, 972, 1458, 2916, 7193, 14386, 21579, 28772, 43158, 64737, 86316, 129474, 194211, 258948, 388422, 582633, 776844, 1165266, 1747899, 2330532, 3495798, 5243697, 6991596, 10487394, 20974788]

約数ペア:

[(1, 20974788), (2, 10487394), (3, 6991596), (4, 5243697), (6, 3495798), (9, 2330532), (12, 1747899), (18, 1165266), (27, 776844), (36, 582633), (54, 388422), (81, 258948), (108, 194211), (162, 129474), (243, 86316), (324, 64737), (486, 43158), (729, 28772), (972, 21579), (1458, 14386), (2916, 7193)]