21574755

素因数分解:

$3^7\times 5^1\times {\mathrm{1973}}^1$

素因数の和:1999

約数の個数: 32

約数和(自身を含む): 38848320

約数和(自身を除く): 17273565

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 1973, 2187, 3645, 5919, 9865, 10935, 17757, 29595, 53271, 88785, 159813, 266355, 479439, 799065, 1438317, 2397195, 4314951, 7191585, 21574755]

約数ペア:

[(1, 21574755), (3, 7191585), (5, 4314951), (9, 2397195), (15, 1438317), (27, 799065), (45, 479439), (81, 266355), (135, 159813), (243, 88785), (405, 53271), (729, 29595), (1215, 17757), (1973, 10935), (2187, 9865), (3645, 5919)]