858704020

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{425101}}^1$

素因数の和:425211

約数の個数: 24

約数和(自身を含む): 1821136968

約数和(自身を除く): 962432948

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 425101, 850202, 1700404, 2125505, 4251010, 8502020, 42935201, 85870402, 171740804, 214676005, 429352010, 858704020]

約数ペア:

[(1, 858704020), (2, 429352010), (4, 214676005), (5, 171740804), (10, 85870402), (20, 42935201), (101, 8502020), (202, 4251010), (404, 2125505), (505, 1700404), (1010, 850202), (2020, 425101)]