21273265

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{293}}^1\times {\mathrm{1117}}^1$

素因数の和:1428

約数の個数: 16

約数和(自身を含む): 27610128

約数和(自身を除く): 6336863

約数列:

[1, 5, 13, 65, 293, 1117, 1465, 3809, 5585, 14521, 19045, 72605, 327281, 1636405, 4254653, 21273265]

約数ペア:

[(1, 21273265), (5, 4254653), (13, 1636405), (65, 327281), (293, 72605), (1117, 19045), (1465, 14521), (3809, 5585)]