20998419

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{83}}^1\times {\mathrm{499}}^1$

素因数の和:611

約数の個数: 24

約数和(自身を含む): 30744000

約数和(自身を除く): 9745581

約数列:

[1, 3, 13, 39, 83, 169, 249, 499, 507, 1079, 1497, 3237, 6487, 14027, 19461, 41417, 42081, 84331, 124251, 252993, 538421, 1615263, 6999473, 20998419]

約数ペア:

[(1, 20998419), (3, 6999473), (13, 1615263), (39, 538421), (83, 252993), (169, 124251), (249, 84331), (499, 42081), (507, 41417), (1079, 19461), (1497, 14027), (3237, 6487)]