19178159

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1$

素因数の和:85

約数の個数: 64

約数和(自身を含む): 29030400

約数和(自身を除く): 9852241

約数列:

[1, 7, 11, 13, 17, 23, 49, 77, 91, 119, 143, 161, 187, 221, 253, 299, 343, 391, 539, 637, 833, 1001, 1127, 1309, 1547, 1771, 2093, 2431, 2737, 3289, 3773, 4301, 4459, 5083, 5831, 7007, 7889, 9163, 10829, 12397, 14651, 17017, 19159, 23023, 30107, 35581, 49049, 55913, 64141, 75803, 86779, 102557, 119119, 134113, 161161, 210749, 249067, 391391, 833833, 1128127, 1475243, 1743469, 2739737, 19178159]

約数ペア:

[(1, 19178159), (7, 2739737), (11, 1743469), (13, 1475243), (17, 1128127), (23, 833833), (49, 391391), (77, 249067), (91, 210749), (119, 161161), (143, 134113), (161, 119119), (187, 102557), (221, 86779), (253, 75803), (299, 64141), (343, 55913), (391, 49049), (539, 35581), (637, 30107), (833, 23023), (1001, 19159), (1127, 17017), (1309, 14651), (1547, 12397), (1771, 10829), (2093, 9163), (2431, 7889), (2737, 7007), (3289, 5831), (3773, 5083), (4301, 4459)]