19691287

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{307}}^1$

素因数の和:356

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 6919913

約数列:

[1, 7, 11, 17, 49, 77, 119, 187, 307, 343, 539, 833, 1309, 2149, 3377, 3773, 5219, 5831, 9163, 15043, 23639, 36533, 57409, 64141, 105301, 165473, 255731, 401863, 1158311, 1790117, 2813041, 19691287]

約数ペア:

[(1, 19691287), (7, 2813041), (11, 1790117), (17, 1158311), (49, 401863), (77, 255731), (119, 165473), (187, 105301), (307, 64141), (343, 57409), (539, 36533), (833, 23639), (1309, 15043), (2149, 9163), (3377, 5831), (3773, 5219)]