1638155

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:238

約数の個数: 16

約数和(自身を含む): 2062368

約数和(自身を除く): 424213

約数列:

[1, 5, 41, 61, 131, 205, 305, 655, 2501, 5371, 7991, 12505, 26855, 39955, 327631, 1638155]

約数ペア:

[(1, 1638155), (5, 327631), (41, 39955), (61, 26855), (131, 12505), (205, 7991), (305, 5371), (655, 2501)]