18128780

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{3527}}^1$

素因数の和:3793

約数の個数: 24

約数和(自身を含む): 38229408

約数和(自身を除く): 20100628

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 3527, 5140, 7054, 14108, 17635, 35270, 70540, 906439, 1812878, 3625756, 4532195, 9064390, 18128780]

約数ペア:

[(1, 18128780), (2, 9064390), (4, 4532195), (5, 3625756), (10, 1812878), (20, 906439), (257, 70540), (514, 35270), (1028, 17635), (1285, 14108), (2570, 7054), (3527, 5140)]