19988940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19597}}^1$

素因数の和:19626

約数の個数: 48

約数和(自身を含む): 59264352

約数和(自身を除く): 39275412

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 19597, 39194, 58791, 78388, 97985, 117582, 195970, 235164, 293955, 333149, 391940, 587910, 666298, 999447, 1175820, 1332596, 1665745, 1998894, 3331490, 3997788, 4997235, 6662980, 9994470, 19988940]

約数ペア:

[(1, 19988940), (2, 9994470), (3, 6662980), (4, 4997235), (5, 3997788), (6, 3331490), (10, 1998894), (12, 1665745), (15, 1332596), (17, 1175820), (20, 999447), (30, 666298), (34, 587910), (51, 391940), (60, 333149), (68, 293955), (85, 235164), (102, 195970), (170, 117582), (204, 97985), (255, 78388), (340, 58791), (510, 39194), (1020, 19597)]