21097219

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:187

約数の個数: 32

約数和(自身を含む): 26256384

約数和(自身を除く): 5159165

約数列:

[1, 11, 13, 43, 47, 73, 143, 473, 517, 559, 611, 803, 949, 2021, 3139, 3431, 6149, 6721, 10439, 22231, 26273, 34529, 37741, 40807, 44603, 147533, 289003, 448877, 490633, 1622863, 1917929, 21097219]

約数ペア:

[(1, 21097219), (11, 1917929), (13, 1622863), (43, 490633), (47, 448877), (73, 289003), (143, 147533), (473, 44603), (517, 40807), (559, 37741), (611, 34529), (803, 26273), (949, 22231), (2021, 10439), (3139, 6721), (3431, 6149)]