20815669868

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{523}}^1\times {\mathrm{947}}^1$

素因数の和:1579

約数の個数: 96

約数和(自身を含む): 44508979200

約数和(自身を除く): 23693309332

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 79, 133, 158, 266, 316, 523, 532, 553, 947, 1046, 1106, 1501, 1894, 2092, 2212, 3002, 3661, 3788, 6004, 6629, 7322, 9937, 10507, 13258, 14644, 17993, 19874, 21014, 26516, 35986, 39748, 41317, 42028, 69559, 71972, 74813, 82634, 125951, 139118, 149626, 165268, 251902, 278236, 289219, 299252, 495281, 503804, 523691, 578438, 785023, 990562, 1047382, 1156876, 1421447, 1570046, 1981124, 2094764, 2842894, 3140092, 3466967, 5495161, 5685788, 6933934, 9410339, 9950129, 10990322, 13867868, 18820678, 19900258, 21980644, 37641356, 39127199, 39800516, 65872373, 78254398, 131744746, 156508796, 263489492, 273890393, 547780786, 743416781, 1095561572, 1486833562, 2973667124, 5203917467, 10407834934, 20815669868]

約数ペア:

[(1, 20815669868), (2, 10407834934), (4, 5203917467), (7, 2973667124), (14, 1486833562), (19, 1095561572), (28, 743416781), (38, 547780786), (76, 273890393), (79, 263489492), (133, 156508796), (158, 131744746), (266, 78254398), (316, 65872373), (523, 39800516), (532, 39127199), (553, 37641356), (947, 21980644), (1046, 19900258), (1106, 18820678), (1501, 13867868), (1894, 10990322), (2092, 9950129), (2212, 9410339), (3002, 6933934), (3661, 5685788), (3788, 5495161), (6004, 3466967), (6629, 3140092), (7322, 2842894), (9937, 2094764), (10507, 1981124), (13258, 1570046), (14644, 1421447), (17993, 1156876), (19874, 1047382), (21014, 990562), (26516, 785023), (35986, 578438), (39748, 523691), (41317, 503804), (42028, 495281), (69559, 299252), (71972, 289219), (74813, 278236), (82634, 251902), (125951, 165268), (139118, 149626)]