21080451

素因数分解:

$3^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{11279}}^1$

素因数の和:11378

約数の個数: 16

約数和(自身を含む): 32486400

約数和(自身を除く): 11405949

約数列:

[1, 3, 7, 21, 89, 267, 623, 1869, 11279, 33837, 78953, 236859, 1003831, 3011493, 7026817, 21080451]

約数ペア:

[(1, 21080451), (3, 7026817), (7, 3011493), (21, 1003831), (89, 236859), (267, 78953), (623, 33837), (1869, 11279)]