20213985

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{122509}}^1$

素因数の和:122528

約数の個数: 16

約数和(自身を含む): 35282880

約数和(自身を除く): 15068895

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 122509, 367527, 612545, 1347599, 1837635, 4042797, 6737995, 20213985]

約数ペア:

[(1, 20213985), (3, 6737995), (5, 4042797), (11, 1837635), (15, 1347599), (33, 612545), (55, 367527), (165, 122509)]