21095809

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{1733}}^1$

素因数の和:1824

約数の個数: 16

約数和(自身を含む): 25302528

約数和(自身を除く): 4206719

約数列:

[1, 7, 37, 47, 259, 329, 1733, 1739, 12131, 12173, 64121, 81451, 448847, 570157, 3013687, 21095809]

約数ペア:

[(1, 21095809), (7, 3013687), (37, 570157), (47, 448847), (259, 81451), (329, 64121), (1733, 12173), (1739, 12131)]