863140

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{419}}^1$

素因数の和:531

約数の個数: 24

約数和(自身を含む): 1834560

約数和(自身を除く): 971420

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 419, 515, 838, 1030, 1676, 2060, 2095, 4190, 8380, 43157, 86314, 172628, 215785, 431570, 863140]

約数ペア:

[(1, 863140), (2, 431570), (4, 215785), (5, 172628), (10, 86314), (20, 43157), (103, 8380), (206, 4190), (412, 2095), (419, 2060), (515, 1676), (838, 1030)]