21032541

素因数分解:

$3^4\times {\mathrm{73}}^1\times {\mathrm{3557}}^1$

素因数の和:3642

約数の個数: 20

約数和(自身を含む): 31858332

約数和(自身を除く): 10825791

約数列:

[1, 3, 9, 27, 73, 81, 219, 657, 1971, 3557, 5913, 10671, 32013, 96039, 259661, 288117, 778983, 2336949, 7010847, 21032541]

約数ペア:

[(1, 21032541), (3, 7010847), (9, 2336949), (27, 778983), (73, 288117), (81, 259661), (219, 96039), (657, 32013), (1971, 10671), (3557, 5913)]