20815155

素因数分解:

$3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{5573}}^1$

素因数の和:5667

約数の個数: 24

約数和(自身を含む): 36520848

約数和(自身を除く): 15705693

約数列:

[1, 3, 5, 9, 15, 45, 83, 249, 415, 747, 1245, 3735, 5573, 16719, 27865, 50157, 83595, 250785, 462559, 1387677, 2312795, 4163031, 6938385, 20815155]

約数ペア:

[(1, 20815155), (3, 6938385), (5, 4163031), (9, 2312795), (15, 1387677), (45, 462559), (83, 250785), (249, 83595), (415, 50157), (747, 27865), (1245, 16719), (3735, 5573)]