1991259095

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:408

約数の個数: 64

約数和(自身を含む): 2878848000

約数和(自身を除く): 887588905

約数列:

[1, 5, 7, 35, 41, 67, 139, 149, 205, 287, 335, 469, 695, 745, 973, 1043, 1435, 2345, 2747, 4865, 5215, 5699, 6109, 9313, 9983, 13735, 19229, 20711, 28495, 30545, 39893, 42763, 46565, 49915, 65191, 69881, 96145, 103555, 144977, 199465, 213815, 325955, 349405, 381833, 409303, 724885, 849151, 1387637, 1909165, 2046515, 2672831, 2865121, 4245755, 5944057, 6938185, 9713459, 13364155, 14325605, 29720285, 48567295, 56893117, 284465585, 398251819, 1991259095]

約数ペア:

[(1, 1991259095), (5, 398251819), (7, 284465585), (35, 56893117), (41, 48567295), (67, 29720285), (139, 14325605), (149, 13364155), (205, 9713459), (287, 6938185), (335, 5944057), (469, 4245755), (695, 2865121), (745, 2672831), (973, 2046515), (1043, 1909165), (1435, 1387637), (2345, 849151), (2747, 724885), (4865, 409303), (5215, 381833), (5699, 349405), (6109, 325955), (9313, 213815), (9983, 199465), (13735, 144977), (19229, 103555), (20711, 96145), (28495, 69881), (30545, 65191), (39893, 49915), (42763, 46565)]