19900220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{52369}}^1$

素因数の和:52397

約数の個数: 24

約数和(自身を含む): 43990800

約数和(自身を除く): 24090580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 52369, 104738, 209476, 261845, 523690, 995011, 1047380, 1990022, 3980044, 4975055, 9950110, 19900220]

約数ペア:

[(1, 19900220), (2, 9950110), (4, 4975055), (5, 3980044), (10, 1990022), (19, 1047380), (20, 995011), (38, 523690), (76, 261845), (95, 209476), (190, 104738), (380, 52369)]