19378751917

素因数分解:

$7^4\times {\mathrm{107}}^1\times {\mathrm{75431}}^1$

素因数の和:75566

約数の個数: 20

約数和(自身を含む): 22818783456

約数和(自身を除く): 3440031539

約数列:

[1, 7, 49, 107, 343, 749, 2401, 5243, 36701, 75431, 256907, 528017, 3696119, 8071117, 25872833, 56497819, 181109831, 395484733, 2768393131, 19378751917]

約数ペア:

[(1, 19378751917), (7, 2768393131), (49, 395484733), (107, 181109831), (343, 56497819), (749, 25872833), (2401, 8071117), (5243, 3696119), (36701, 528017), (75431, 256907)]