18992305

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{6449}}^1$

素因数の和:6504

約数の個数: 16

約数和(自身を含む): 24768000

約数和(自身を除く): 5775695

約数列:

[1, 5, 19, 31, 95, 155, 589, 2945, 6449, 32245, 122531, 199919, 612655, 999595, 3798461, 18992305]

約数ペア:

[(1, 18992305), (5, 3798461), (19, 999595), (31, 612655), (95, 199919), (155, 122531), (589, 32245), (2945, 6449)]