19306441

素因数分解:

$7^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1$

素因数の和:99

約数の個数: 40

約数和(自身を含む): 26620704

約数和(自身を除く): 7314263

約数列:

[1, 7, 11, 17, 43, 49, 77, 119, 187, 301, 343, 473, 539, 731, 833, 1309, 2107, 2401, 3311, 3773, 5117, 5831, 8041, 9163, 14749, 23177, 26411, 35819, 40817, 56287, 64141, 103243, 162239, 250733, 394009, 448987, 1135673, 1755131, 2758063, 19306441]

約数ペア:

[(1, 19306441), (7, 2758063), (11, 1755131), (17, 1135673), (43, 448987), (49, 394009), (77, 250733), (119, 162239), (187, 103243), (301, 64141), (343, 56287), (473, 40817), (539, 35819), (731, 26411), (833, 23177), (1309, 14749), (2107, 9163), (2401, 8041), (3311, 5831), (3773, 5117)]