19889835

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{27061}}^1$

素因数の和:27083

約数の個数: 24

約数和(自身を含む): 37020816

約数和(自身を除く): 17130981

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 27061, 81183, 135305, 189427, 405915, 568281, 947135, 1325989, 2841405, 3977967, 6629945, 19889835]

約数ペア:

[(1, 19889835), (3, 6629945), (5, 3977967), (7, 2841405), (15, 1325989), (21, 947135), (35, 568281), (49, 405915), (105, 189427), (147, 135305), (245, 81183), (735, 27061)]