21078879

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{7451}}^1$

素因数の和:7518

約数の個数: 16

約数和(自身を含む): 30046464

約数和(自身を除く): 8967585

約数列:

[1, 3, 23, 41, 69, 123, 943, 2829, 7451, 22353, 171373, 305491, 514119, 916473, 7026293, 21078879]

約数ペア:

[(1, 21078879), (3, 7026293), (23, 916473), (41, 514119), (69, 305491), (123, 171373), (943, 22353), (2829, 7451)]