19658353

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:229

約数の個数: 32

約数和(自身を含む): 24837120

約数和(自身を除く): 5178767

約数列:

[1, 11, 13, 23, 43, 139, 143, 253, 299, 473, 559, 989, 1529, 1807, 3197, 3289, 5977, 6149, 10879, 12857, 19877, 35167, 41561, 65747, 77701, 137471, 141427, 457171, 854711, 1512181, 1787123, 19658353]

約数ペア:

[(1, 19658353), (11, 1787123), (13, 1512181), (23, 854711), (43, 457171), (139, 141427), (143, 137471), (253, 77701), (299, 65747), (473, 41561), (559, 35167), (989, 19877), (1529, 12857), (1807, 10879), (3197, 6149), (3289, 5977)]