20986142

素因数分解:

$2^1\times {\mathrm{67}}^1\times {\mathrm{199}}^1\times {\mathrm{787}}^1$

素因数の和:1055

約数の個数: 16

約数和(自身を含む): 32150400

約数和(自身を除く): 11164258

約数列:

[1, 2, 67, 134, 199, 398, 787, 1574, 13333, 26666, 52729, 105458, 156613, 313226, 10493071, 20986142]

約数ペア:

[(1, 20986142), (2, 10493071), (67, 313226), (134, 156613), (199, 105458), (398, 52729), (787, 26666), (1574, 13333)]