21638145

素因数分解:

$3^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{3527}}^1$

素因数の和:3944

約数の個数: 16

約数和(自身を含む): 34715520

約数和(自身を除く): 13077375

約数列:

[1, 3, 5, 15, 409, 1227, 2045, 3527, 6135, 10581, 17635, 52905, 1442543, 4327629, 7212715, 21638145]

約数ペア:

[(1, 21638145), (3, 7212715), (5, 4327629), (15, 1442543), (409, 52905), (1227, 17635), (2045, 10581), (3527, 6135)]