27990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{311}}^1$

素因数の和:324

約数の個数: 24

約数和(自身を含む): 73008

約数和(自身を除く): 45018

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 311, 622, 933, 1555, 1866, 2799, 3110, 4665, 5598, 9330, 13995, 27990]

約数ペア:

[(1, 27990), (2, 13995), (3, 9330), (5, 5598), (6, 4665), (9, 3110), (10, 2799), (15, 1866), (18, 1555), (30, 933), (45, 622), (90, 311)]