21657507

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{1567}}^1$

素因数の和:1858

約数の個数: 16

約数和(自身を含む): 30707712

約数和(自身を除く): 9050205

約数列:

[1, 3, 17, 51, 271, 813, 1567, 4607, 4701, 13821, 26639, 79917, 424657, 1273971, 7219169, 21657507]

約数ペア:

[(1, 21657507), (3, 7219169), (17, 1273971), (51, 424657), (271, 79917), (813, 26639), (1567, 13821), (4607, 4701)]