21411273

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{11681}}^1$

素因数の和:11744

約数の個数: 16

約数和(自身を含む): 31401216

約数和(自身を除く): 9989943

約数列:

[1, 3, 13, 39, 47, 141, 611, 1833, 11681, 35043, 151853, 455559, 549007, 1647021, 7137091, 21411273]

約数ペア:

[(1, 21411273), (3, 7137091), (13, 1647021), (39, 549007), (47, 455559), (141, 151853), (611, 35043), (1833, 11681)]