21290931

素因数分解:

$3^5\times {\mathrm{41}}^1\times {\mathrm{2137}}^1$

素因数の和:2193

約数の個数: 24

約数和(自身を含む): 32685744

約数和(自身を除く): 11394813

約数列:

[1, 3, 9, 27, 41, 81, 123, 243, 369, 1107, 2137, 3321, 6411, 9963, 19233, 57699, 87617, 173097, 262851, 519291, 788553, 2365659, 7096977, 21290931]

約数ペア:

[(1, 21290931), (3, 7096977), (9, 2365659), (27, 788553), (41, 519291), (81, 262851), (123, 173097), (243, 87617), (369, 57699), (1107, 19233), (2137, 9963), (3321, 6411)]