18540640

素因数分解:

$2^5\times 5^1\times {\mathrm{115879}}^1$

素因数の和:115894

約数の個数: 24

約数和(自身を含む): 43802640

約数和(自身を除く): 25262000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 115879, 231758, 463516, 579395, 927032, 1158790, 1854064, 2317580, 3708128, 4635160, 9270320, 18540640]

約数ペア:

[(1, 18540640), (2, 9270320), (4, 4635160), (5, 3708128), (8, 2317580), (10, 1854064), (16, 1158790), (20, 927032), (32, 579395), (40, 463516), (80, 231758), (160, 115879)]