261519020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1867993}}^1$

素因数の和:1868009

約数の個数: 24

約数和(自身を含む): 627645984

約数和(自身を除く): 366126964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1867993, 3735986, 7471972, 9339965, 13075951, 18679930, 26151902, 37359860, 52303804, 65379755, 130759510, 261519020]

約数ペア:

[(1, 261519020), (2, 130759510), (4, 65379755), (5, 52303804), (7, 37359860), (10, 26151902), (14, 18679930), (20, 13075951), (28, 9339965), (35, 7471972), (70, 3735986), (140, 1867993)]