31980640

素因数分解:

$2^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1979}}^1$

素因数の和:2095

約数の個数: 48

約数和(自身を含む): 76340880

約数和(自身を除く): 44360240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 101, 160, 202, 404, 505, 808, 1010, 1616, 1979, 2020, 3232, 3958, 4040, 7916, 8080, 9895, 15832, 16160, 19790, 31664, 39580, 63328, 79160, 158320, 199879, 316640, 399758, 799516, 999395, 1599032, 1998790, 3198064, 3997580, 6396128, 7995160, 15990320, 31980640]

約数ペア:

[(1, 31980640), (2, 15990320), (4, 7995160), (5, 6396128), (8, 3997580), (10, 3198064), (16, 1998790), (20, 1599032), (32, 999395), (40, 799516), (80, 399758), (101, 316640), (160, 199879), (202, 158320), (404, 79160), (505, 63328), (808, 39580), (1010, 31664), (1616, 19790), (1979, 16160), (2020, 15832), (3232, 9895), (3958, 8080), (4040, 7916)]