128204090

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{261641}}^1$

素因数の和:261662

約数の個数: 24

約数和(自身を含む): 268444692

約数和(自身を除く): 140240602

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 261641, 523282, 1308205, 1831487, 2616410, 3662974, 9157435, 12820409, 18314870, 25640818, 64102045, 128204090]

約数ペア:

[(1, 128204090), (2, 64102045), (5, 25640818), (7, 18314870), (10, 12820409), (14, 9157435), (35, 3662974), (49, 2616410), (70, 1831487), (98, 1308205), (245, 523282), (490, 261641)]