665120

素因数分解:

$2^5\times 5^1\times {\mathrm{4157}}^1$

素因数の和:4172

約数の個数: 24

約数和(自身を含む): 1571724

約数和(自身を除く): 906604

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 4157, 8314, 16628, 20785, 33256, 41570, 66512, 83140, 133024, 166280, 332560, 665120]

約数ペア:

[(1, 665120), (2, 332560), (4, 166280), (5, 133024), (8, 83140), (10, 66512), (16, 41570), (20, 33256), (32, 20785), (40, 16628), (80, 8314), (160, 4157)]