19940473

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:193

約数の個数: 32

約数和(自身を含む): 25498368

約数和(自身を除く): 5557895

約数列:

[1, 7, 17, 41, 61, 67, 119, 287, 427, 469, 697, 1037, 1139, 2501, 2747, 4087, 4879, 7259, 7973, 17507, 19229, 28609, 42517, 46699, 69479, 167567, 297619, 326893, 486353, 1172969, 2848639, 19940473]

約数ペア:

[(1, 19940473), (7, 2848639), (17, 1172969), (41, 486353), (61, 326893), (67, 297619), (119, 167567), (287, 69479), (427, 46699), (469, 42517), (697, 28609), (1037, 19229), (1139, 17507), (2501, 7973), (2747, 7259), (4087, 4879)]