990225

素因数分解:

$3^5\times 5^2\times {\mathrm{163}}^1$

素因数の和:188

約数の個数: 36

約数和(自身を含む): 1850576

約数和(自身を除く): 860351

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 163, 225, 243, 405, 489, 675, 815, 1215, 1467, 2025, 2445, 4075, 4401, 6075, 7335, 12225, 13203, 22005, 36675, 39609, 66015, 110025, 198045, 330075, 990225]

約数ペア:

[(1, 990225), (3, 330075), (5, 198045), (9, 110025), (15, 66015), (25, 39609), (27, 36675), (45, 22005), (75, 13203), (81, 12225), (135, 7335), (163, 6075), (225, 4401), (243, 4075), (405, 2445), (489, 2025), (675, 1467), (815, 1215)]