19205599

素因数分解:

$7^4\times {\mathrm{19}}^1\times {\mathrm{421}}^1$

素因数の和:468

約数の個数: 20

約数和(自身を含む): 23640440

約数和(自身を除く): 4434841

約数列:

[1, 7, 19, 49, 133, 343, 421, 931, 2401, 2947, 6517, 7999, 20629, 45619, 55993, 144403, 391951, 1010821, 2743657, 19205599]

約数ペア:

[(1, 19205599), (7, 2743657), (19, 1010821), (49, 391951), (133, 144403), (343, 55993), (421, 45619), (931, 20629), (2401, 7999), (2947, 6517)]