20611431

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{503}}^1$

素因数の和:695

約数の個数: 24

約数和(自身を含む): 31056480

約数和(自身を除く): 10445049

約数列:

[1, 3, 9, 29, 87, 157, 261, 471, 503, 1413, 1509, 4527, 4553, 13659, 14587, 40977, 43761, 78971, 131283, 236913, 710739, 2290159, 6870477, 20611431]

約数ペア:

[(1, 20611431), (3, 6870477), (9, 2290159), (29, 710739), (87, 236913), (157, 131283), (261, 78971), (471, 43761), (503, 40977), (1413, 14587), (1509, 13659), (4527, 4553)]