18764540

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{9109}}^1$

素因数の和:9221

約数の個数: 24

約数和(自身を含む): 39792480

約数和(自身を除く): 21027940

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 9109, 18218, 36436, 45545, 91090, 182180, 938227, 1876454, 3752908, 4691135, 9382270, 18764540]

約数ペア:

[(1, 18764540), (2, 9382270), (4, 4691135), (5, 3752908), (10, 1876454), (20, 938227), (103, 182180), (206, 91090), (412, 45545), (515, 36436), (1030, 18218), (2060, 9109)]