19857495

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{27017}}^1$

素因数の和:27039

約数の個数: 24

約数和(自身を含む): 36960624

約数和(自身を除く): 17103129

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 27017, 81051, 135085, 189119, 405255, 567357, 945595, 1323833, 2836785, 3971499, 6619165, 19857495]

約数ペア:

[(1, 19857495), (3, 6619165), (5, 3971499), (7, 2836785), (15, 1323833), (21, 945595), (35, 567357), (49, 405255), (105, 189119), (147, 135085), (245, 81051), (735, 27017)]