77747780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{3499}}^1$

素因数の和:3620

約数の個数: 48

約数和(自身を含む): 179928000

約数和(自身を除く): 102180220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 404, 505, 1010, 1111, 2020, 2222, 3499, 4444, 5555, 6998, 11110, 13996, 17495, 22220, 34990, 38489, 69980, 76978, 153956, 192445, 353399, 384890, 706798, 769780, 1413596, 1766995, 3533990, 3887389, 7067980, 7774778, 15549556, 19436945, 38873890, 77747780]

約数ペア:

[(1, 77747780), (2, 38873890), (4, 19436945), (5, 15549556), (10, 7774778), (11, 7067980), (20, 3887389), (22, 3533990), (44, 1766995), (55, 1413596), (101, 769780), (110, 706798), (202, 384890), (220, 353399), (404, 192445), (505, 153956), (1010, 76978), (1111, 69980), (2020, 38489), (2222, 34990), (3499, 22220), (4444, 17495), (5555, 13996), (6998, 11110)]