18876455

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:371

約数の個数: 24

約数和(自身を含む): 24902640

約数和(自身を除く): 6026185

約数列:

[1, 5, 13, 65, 89, 169, 251, 445, 845, 1157, 1255, 3263, 5785, 15041, 16315, 22339, 42419, 75205, 111695, 212095, 290407, 1452035, 3775291, 18876455]

約数ペア:

[(1, 18876455), (5, 3775291), (13, 1452035), (65, 290407), (89, 212095), (169, 111695), (251, 75205), (445, 42419), (845, 22339), (1157, 16315), (1255, 15041), (3263, 5785)]