81807880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{26561}}^1$

素因数の和:26590

約数の個数: 64

約数和(自身を含む): 229495680

約数和(自身を除く): 147687800

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 26561, 53122, 106244, 132805, 185927, 212488, 265610, 292171, 371854, 531220, 584342, 743708, 929635, 1062440, 1168684, 1460855, 1487416, 1859270, 2045197, 2337368, 2921710, 3718540, 4090394, 5843420, 7437080, 8180788, 10225985, 11686840, 16361576, 20451970, 40903940, 81807880]

約数ペア:

[(1, 81807880), (2, 40903940), (4, 20451970), (5, 16361576), (7, 11686840), (8, 10225985), (10, 8180788), (11, 7437080), (14, 5843420), (20, 4090394), (22, 3718540), (28, 2921710), (35, 2337368), (40, 2045197), (44, 1859270), (55, 1487416), (56, 1460855), (70, 1168684), (77, 1062440), (88, 929635), (110, 743708), (140, 584342), (154, 531220), (220, 371854), (280, 292171), (308, 265610), (385, 212488), (440, 185927), (616, 132805), (770, 106244), (1540, 53122), (3080, 26561)]