21128349

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{4297}}^1$

素因数の和:4460

約数の個数: 16

約数和(自身を含む): 30945600

約数和(自身を除く): 9817251

約数列:

[1, 3, 11, 33, 149, 447, 1639, 4297, 4917, 12891, 47267, 141801, 640253, 1920759, 7042783, 21128349]

約数ペア:

[(1, 21128349), (3, 7042783), (11, 1920759), (33, 640253), (149, 141801), (447, 47267), (1639, 12891), (4297, 4917)]