21075165

素因数分解:

$3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4637}}^1$

素因数の和:4749

約数の個数: 24

約数和(自身を含む): 36899928

約数和(自身を除く): 15824763

約数列:

[1, 3, 5, 9, 15, 45, 101, 303, 505, 909, 1515, 4545, 4637, 13911, 23185, 41733, 69555, 208665, 468337, 1405011, 2341685, 4215033, 7025055, 21075165]

約数ペア:

[(1, 21075165), (3, 7025055), (5, 4215033), (9, 2341685), (15, 1405011), (45, 468337), (101, 208665), (303, 69555), (505, 41733), (909, 23185), (1515, 13911), (4545, 4637)]