254485

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{661}}^1$

素因数の和:684

約数の個数: 16

約数和(自身を含む): 381312

約数和(自身を除く): 126827

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 661, 3305, 4627, 7271, 23135, 36355, 50897, 254485]

約数ペア:

[(1, 254485), (5, 50897), (7, 36355), (11, 23135), (35, 7271), (55, 4627), (77, 3305), (385, 661)]