161065720

素因数分解:

$2^3\times 5^1\times {\mathrm{4026643}}^1$

素因数の和:4026654

約数の個数: 16

約数和(自身を含む): 362397960

約数和(自身を除く): 201332240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4026643, 8053286, 16106572, 20133215, 32213144, 40266430, 80532860, 161065720]

約数ペア:

[(1, 161065720), (2, 80532860), (4, 40266430), (5, 32213144), (8, 20133215), (10, 16106572), (20, 8053286), (40, 4026643)]