87687020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{257903}}^1$

素因数の和:257929

約数の個数: 24

約数和(自身を含む): 194975424

約数和(自身を除く): 107288404

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 257903, 515806, 1031612, 1289515, 2579030, 4384351, 5158060, 8768702, 17537404, 21921755, 43843510, 87687020]

約数ペア:

[(1, 87687020), (2, 43843510), (4, 21921755), (5, 17537404), (10, 8768702), (17, 5158060), (20, 4384351), (34, 2579030), (68, 1289515), (85, 1031612), (170, 515806), (340, 257903)]