199297780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{8311}}^1$

素因数の和:8440

約数の個数: 48

約数和(自身を含む): 460817280

約数和(自身を除く): 261519500

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 218, 220, 436, 545, 1090, 1199, 2180, 2398, 4796, 5995, 8311, 11990, 16622, 23980, 33244, 41555, 83110, 91421, 166220, 182842, 365684, 457105, 905899, 914210, 1811798, 1828420, 3623596, 4529495, 9058990, 9964889, 18117980, 19929778, 39859556, 49824445, 99648890, 199297780]

約数ペア:

[(1, 199297780), (2, 99648890), (4, 49824445), (5, 39859556), (10, 19929778), (11, 18117980), (20, 9964889), (22, 9058990), (44, 4529495), (55, 3623596), (109, 1828420), (110, 1811798), (218, 914210), (220, 905899), (436, 457105), (545, 365684), (1090, 182842), (1199, 166220), (2180, 91421), (2398, 83110), (4796, 41555), (5995, 33244), (8311, 23980), (11990, 16622)]