19979556

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{2647}}^1$

素因数の和:2708

約数の個数: 48

約数和(自身を含む): 50714496

約数和(自身を除く): 30734940

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 37, 51, 68, 74, 102, 111, 148, 204, 222, 444, 629, 1258, 1887, 2516, 2647, 3774, 5294, 7548, 7941, 10588, 15882, 31764, 44999, 89998, 97939, 134997, 179996, 195878, 269994, 293817, 391756, 539988, 587634, 1175268, 1664963, 3329926, 4994889, 6659852, 9989778, 19979556]

約数ペア:

[(1, 19979556), (2, 9989778), (3, 6659852), (4, 4994889), (6, 3329926), (12, 1664963), (17, 1175268), (34, 587634), (37, 539988), (51, 391756), (68, 293817), (74, 269994), (102, 195878), (111, 179996), (148, 134997), (204, 97939), (222, 89998), (444, 44999), (629, 31764), (1258, 15882), (1887, 10588), (2516, 7941), (2647, 7548), (3774, 5294)]