66985760

素因数分解:

$2^5\times 5^1\times {\mathrm{499}}^1\times {\mathrm{839}}^1$

素因数の和:1353

約数の個数: 48

約数和(自身を含む): 158760000

約数和(自身を除く): 91774240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 499, 839, 998, 1678, 1996, 2495, 3356, 3992, 4195, 4990, 6712, 7984, 8390, 9980, 13424, 15968, 16780, 19960, 26848, 33560, 39920, 67120, 79840, 134240, 418661, 837322, 1674644, 2093305, 3349288, 4186610, 6698576, 8373220, 13397152, 16746440, 33492880, 66985760]

約数ペア:

[(1, 66985760), (2, 33492880), (4, 16746440), (5, 13397152), (8, 8373220), (10, 6698576), (16, 4186610), (20, 3349288), (32, 2093305), (40, 1674644), (80, 837322), (160, 418661), (499, 134240), (839, 79840), (998, 67120), (1678, 39920), (1996, 33560), (2495, 26848), (3356, 19960), (3992, 16780), (4195, 15968), (4990, 13424), (6712, 9980), (7984, 8390)]