81990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{911}}^1$

素因数の和:924

約数の個数: 24

約数和(自身を含む): 213408

約数和(自身を除く): 131418

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 911, 1822, 2733, 4555, 5466, 8199, 9110, 13665, 16398, 27330, 40995, 81990]

約数ペア:

[(1, 81990), (2, 40995), (3, 27330), (5, 16398), (6, 13665), (9, 9110), (10, 8199), (15, 5466), (18, 4555), (30, 2733), (45, 1822), (90, 911)]