19605380

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{23909}}^1$

素因数の和:23959

約数の個数: 24

約数和(自身を含む): 42177240

約数和(自身を除く): 22571860

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 23909, 47818, 95636, 119545, 239090, 478180, 980269, 1960538, 3921076, 4901345, 9802690, 19605380]

約数ペア:

[(1, 19605380), (2, 9802690), (4, 4901345), (5, 3921076), (10, 1960538), (20, 980269), (41, 478180), (82, 239090), (164, 119545), (205, 95636), (410, 47818), (820, 23909)]