19913894

素因数分解:

$2^1\times 7^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1$

素因数の和:83

約数の個数: 80

約数和(自身を含む): 42351120

約数和(自身を除く): 22437226

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 29, 49, 58, 77, 91, 98, 143, 154, 182, 203, 286, 319, 343, 377, 406, 539, 637, 638, 686, 754, 1001, 1078, 1274, 1421, 2002, 2233, 2401, 2639, 2842, 3773, 4147, 4459, 4466, 4802, 5278, 7007, 7546, 8294, 8918, 9947, 14014, 15631, 18473, 19894, 26411, 29029, 31213, 31262, 36946, 49049, 52822, 58058, 62426, 69629, 98098, 109417, 129311, 139258, 203203, 218834, 258622, 343343, 406406, 686686, 765919, 905177, 1422421, 1531838, 1810354, 2844842, 9956947, 19913894]

約数ペア:

[(1, 19913894), (2, 9956947), (7, 2844842), (11, 1810354), (13, 1531838), (14, 1422421), (22, 905177), (26, 765919), (29, 686686), (49, 406406), (58, 343343), (77, 258622), (91, 218834), (98, 203203), (143, 139258), (154, 129311), (182, 109417), (203, 98098), (286, 69629), (319, 62426), (343, 58058), (377, 52822), (406, 49049), (539, 36946), (637, 31262), (638, 31213), (686, 29029), (754, 26411), (1001, 19894), (1078, 18473), (1274, 15631), (1421, 14014), (2002, 9947), (2233, 8918), (2401, 8294), (2639, 7546), (2842, 7007), (3773, 5278), (4147, 4802), (4459, 4466)]