21411885

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{129769}}^1$

素因数の和:129788

約数の個数: 16

約数和(自身を含む): 37373760

約数和(自身を除く): 15961875

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 129769, 389307, 648845, 1427459, 1946535, 4282377, 7137295, 21411885]

約数ペア:

[(1, 21411885), (3, 7137295), (5, 4282377), (11, 1946535), (15, 1427459), (33, 648845), (55, 389307), (165, 129769)]