19986447

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{499}}^1$

素因数の和:607

約数の個数: 24

約数和(自身を含む): 29280000

約数和(自身を除く): 9293553

約数列:

[1, 3, 13, 39, 79, 169, 237, 499, 507, 1027, 1497, 3081, 6487, 13351, 19461, 39421, 40053, 84331, 118263, 252993, 512473, 1537419, 6662149, 19986447]

約数ペア:

[(1, 19986447), (3, 6662149), (13, 1537419), (39, 512473), (79, 252993), (169, 118263), (237, 84331), (499, 40053), (507, 39421), (1027, 19461), (1497, 13351), (3081, 6487)]