19707711

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1$

素因数の和:235

約数の個数: 32

約数和(自身を含む): 28753920

約数和(自身を除く): 9046209

約数列:

[1, 3, 23, 47, 59, 69, 103, 141, 177, 309, 1081, 1357, 2369, 2773, 3243, 4071, 4841, 6077, 7107, 8319, 14523, 18231, 63779, 111343, 139771, 191337, 285619, 334029, 419313, 856857, 6569237, 19707711]

約数ペア:

[(1, 19707711), (3, 6569237), (23, 856857), (47, 419313), (59, 334029), (69, 285619), (103, 191337), (141, 139771), (177, 111343), (309, 63779), (1081, 18231), (1357, 14523), (2369, 8319), (2773, 7107), (3243, 6077), (4071, 4841)]