1561995

素因数分解:

$3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{337}}^1$

素因数の和:451

約数の個数: 24

約数和(自身を含む): 2741856

約数和(自身を除く): 1179861

約数列:

[1, 3, 5, 9, 15, 45, 103, 309, 337, 515, 927, 1011, 1545, 1685, 3033, 4635, 5055, 15165, 34711, 104133, 173555, 312399, 520665, 1561995]

約数ペア:

[(1, 1561995), (3, 520665), (5, 312399), (9, 173555), (15, 104133), (45, 34711), (103, 15165), (309, 5055), (337, 4635), (515, 3033), (927, 1685), (1011, 1545)]