21782839

素因数分解:

${\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:450

約数の個数: 16

約数和(自身を含む): 24161760

約数和(自身を除く): 2378921

約数列:

[1, 13, 67, 89, 281, 871, 1157, 3653, 5963, 18827, 25009, 77519, 244751, 325117, 1675603, 21782839]

約数ペア:

[(1, 21782839), (13, 1675603), (67, 325117), (89, 244751), (281, 77519), (871, 25009), (1157, 18827), (3653, 5963)]