18956828

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{739}}^1$

素因数の和:818

約数の個数: 36

約数和(自身を含む): 37202760

約数和(自身を除く): 18245932

約数列:

[1, 2, 4, 11, 22, 44, 53, 106, 121, 212, 242, 484, 583, 739, 1166, 1478, 2332, 2956, 6413, 8129, 12826, 16258, 25652, 32516, 39167, 78334, 89419, 156668, 178838, 357676, 430837, 861674, 1723348, 4739207, 9478414, 18956828]

約数ペア:

[(1, 18956828), (2, 9478414), (4, 4739207), (11, 1723348), (22, 861674), (44, 430837), (53, 357676), (106, 178838), (121, 156668), (212, 89419), (242, 78334), (484, 39167), (583, 32516), (739, 25652), (1166, 16258), (1478, 12826), (2332, 8129), (2956, 6413)]