20388976

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1427}}^1$

素因数の和:1501

約数の個数: 40

約数和(自身を含む): 42497280

約数和(自身を除く): 22108304

約数列:

[1, 2, 4, 8, 16, 19, 38, 47, 76, 94, 152, 188, 304, 376, 752, 893, 1427, 1786, 2854, 3572, 5708, 7144, 11416, 14288, 22832, 27113, 54226, 67069, 108452, 134138, 216904, 268276, 433808, 536552, 1073104, 1274311, 2548622, 5097244, 10194488, 20388976]

約数ペア:

[(1, 20388976), (2, 10194488), (4, 5097244), (8, 2548622), (16, 1274311), (19, 1073104), (38, 536552), (47, 433808), (76, 268276), (94, 216904), (152, 134138), (188, 108452), (304, 67069), (376, 54226), (752, 27113), (893, 22832), (1427, 14288), (1786, 11416), (2854, 7144), (3572, 5708)]