20257785

素因数分解:

$3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{6719}}^1$

素因数の和:6797

約数の個数: 24

約数和(自身を含む): 35642880

約数和(自身を除く): 15385095

約数列:

[1, 3, 5, 9, 15, 45, 67, 201, 335, 603, 1005, 3015, 6719, 20157, 33595, 60471, 100785, 302355, 450173, 1350519, 2250865, 4051557, 6752595, 20257785]

約数ペア:

[(1, 20257785), (3, 6752595), (5, 4051557), (9, 2250865), (15, 1350519), (45, 450173), (67, 302355), (201, 100785), (335, 60471), (603, 33595), (1005, 20157), (3015, 6719)]