20887321

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2579}}^1$

素因数の和:2688

約数の個数: 16

約数和(自身を含む): 26006400

約数和(自身を除く): 5119079

約数列:

[1, 7, 13, 89, 91, 623, 1157, 2579, 8099, 18053, 33527, 229531, 234689, 1606717, 2983903, 20887321]

約数ペア:

[(1, 20887321), (7, 2983903), (13, 1606717), (89, 234689), (91, 229531), (623, 33527), (1157, 18053), (2579, 8099)]