21875265

素因数分解:

$3^4\times 5^1\times {\mathrm{54013}}^1$

素因数の和:54030

約数の個数: 20

約数和(自身を含む): 39214164

約数和(自身を除く): 17338899

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 54013, 162039, 270065, 486117, 810195, 1458351, 2430585, 4375053, 7291755, 21875265]

約数ペア:

[(1, 21875265), (3, 7291755), (5, 4375053), (9, 2430585), (15, 1458351), (27, 810195), (45, 486117), (81, 270065), (135, 162039), (405, 54013)]