128312720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^2\times {\mathrm{1669}}^1$

素因数の和:1744

約数の個数: 60

約数和(自身を含む): 308445660

約数和(自身を除く): 180132940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 961, 1240, 1669, 1922, 2480, 3338, 3844, 4805, 6676, 7688, 8345, 9610, 13352, 15376, 16690, 19220, 26704, 33380, 38440, 51739, 66760, 76880, 103478, 133520, 206956, 258695, 413912, 517390, 827824, 1034780, 1603909, 2069560, 3207818, 4139120, 6415636, 8019545, 12831272, 16039090, 25662544, 32078180, 64156360, 128312720]

約数ペア:

[(1, 128312720), (2, 64156360), (4, 32078180), (5, 25662544), (8, 16039090), (10, 12831272), (16, 8019545), (20, 6415636), (31, 4139120), (40, 3207818), (62, 2069560), (80, 1603909), (124, 1034780), (155, 827824), (248, 517390), (310, 413912), (496, 258695), (620, 206956), (961, 133520), (1240, 103478), (1669, 76880), (1922, 66760), (2480, 51739), (3338, 38440), (3844, 33380), (4805, 26704), (6676, 19220), (7688, 16690), (8345, 15376), (9610, 13352)]