199919881

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{3049}}^1$

素因数の和:3121

約数の個数: 32

約数和(自身を含む): 263520000

約数和(自身を除く): 63600119

約数列:

[1, 7, 17, 19, 29, 119, 133, 203, 323, 493, 551, 2261, 3049, 3451, 3857, 9367, 21343, 51833, 57931, 65569, 88421, 362831, 405517, 618947, 984827, 1503157, 1679999, 6893789, 10522099, 11759993, 28559983, 199919881]

約数ペア:

[(1, 199919881), (7, 28559983), (17, 11759993), (19, 10522099), (29, 6893789), (119, 1679999), (133, 1503157), (203, 984827), (323, 618947), (493, 405517), (551, 362831), (2261, 88421), (3049, 65569), (3451, 57931), (3857, 51833), (9367, 21343)]