19669725

素因数分解:

$3^2\times 5^2\times {\mathrm{87421}}^1$

素因数の和:87437

約数の個数: 18

約数和(自身を含む): 35231066

約数和(自身を除く): 15561341

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 87421, 262263, 437105, 786789, 1311315, 2185525, 3933945, 6556575, 19669725]

約数ペア:

[(1, 19669725), (3, 6556575), (5, 3933945), (9, 2185525), (15, 1311315), (25, 786789), (45, 437105), (75, 262263), (225, 87421)]