9991870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{409}}^1$

素因数の和:772

約数の個数: 32

約数和(自身を含む): 20664000

約数和(自身を除く): 10672130

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 349, 409, 698, 818, 1745, 2045, 2443, 2863, 3490, 4090, 4886, 5726, 12215, 14315, 24430, 28630, 142741, 285482, 713705, 999187, 1427410, 1998374, 4995935, 9991870]

約数ペア:

[(1, 9991870), (2, 4995935), (5, 1998374), (7, 1427410), (10, 999187), (14, 713705), (35, 285482), (70, 142741), (349, 28630), (409, 24430), (698, 14315), (818, 12215), (1745, 5726), (2045, 4886), (2443, 4090), (2863, 3490)]