20528565

素因数分解:

$3^1\times 5^1\times {\mathrm{991}}^1\times {\mathrm{1381}}^1$

素因数の和:2380

約数の個数: 16

約数和(自身を含む): 32902656

約数和(自身を除く): 12374091

約数列:

[1, 3, 5, 15, 991, 1381, 2973, 4143, 4955, 6905, 14865, 20715, 1368571, 4105713, 6842855, 20528565]

約数ペア:

[(1, 20528565), (3, 6842855), (5, 4105713), (15, 1368571), (991, 20715), (1381, 14865), (2973, 6905), (4143, 4955)]