15971740

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{4013}}^1$

素因数の和:4221

約数の個数: 24

約数和(自身を含む): 33717600

約数和(自身を除く): 17745860

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 4013, 8026, 16052, 20065, 40130, 80260, 798587, 1597174, 3194348, 3992935, 7985870, 15971740]

約数ペア:

[(1, 15971740), (2, 7985870), (4, 3992935), (5, 3194348), (10, 1597174), (20, 798587), (199, 80260), (398, 40130), (796, 20065), (995, 16052), (1990, 8026), (3980, 4013)]