126400520

素因数分解:

$2^3\times 5^1\times {\mathrm{709}}^1\times {\mathrm{4457}}^1$

素因数の和:5177

約数の個数: 32

約数和(自身を含む): 284866200

約数和(自身を除く): 158465680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 709, 1418, 2836, 3545, 4457, 5672, 7090, 8914, 14180, 17828, 22285, 28360, 35656, 44570, 89140, 178280, 3160013, 6320026, 12640052, 15800065, 25280104, 31600130, 63200260, 126400520]

約数ペア:

[(1, 126400520), (2, 63200260), (4, 31600130), (5, 25280104), (8, 15800065), (10, 12640052), (20, 6320026), (40, 3160013), (709, 178280), (1418, 89140), (2836, 44570), (3545, 35656), (4457, 28360), (5672, 22285), (7090, 17828), (8914, 14180)]