81538220

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{177257}}^1$

素因数の和:177289

約数の個数: 24

約数和(自身を含む): 178676064

約数和(自身を除く): 97137844

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 177257, 354514, 709028, 886285, 1772570, 3545140, 4076911, 8153822, 16307644, 20384555, 40769110, 81538220]

約数ペア:

[(1, 81538220), (2, 40769110), (4, 20384555), (5, 16307644), (10, 8153822), (20, 4076911), (23, 3545140), (46, 1772570), (92, 886285), (115, 709028), (230, 354514), (460, 177257)]