19987245

素因数分解:

$3^2\times 5^1\times {\mathrm{541}}^1\times {\mathrm{821}}^1$

素因数の和:1373

約数の個数: 24

約数和(自身を含む): 34750872

約数和(自身を除く): 14763627

約数列:

[1, 3, 5, 9, 15, 45, 541, 821, 1623, 2463, 2705, 4105, 4869, 7389, 8115, 12315, 24345, 36945, 444161, 1332483, 2220805, 3997449, 6662415, 19987245]

約数ペア:

[(1, 19987245), (3, 6662415), (5, 3997449), (9, 2220805), (15, 1332483), (45, 444161), (541, 36945), (821, 24345), (1623, 12315), (2463, 8115), (2705, 7389), (4105, 4869)]