21215283

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{379}}^1\times {\mathrm{397}}^1$

素因数の和:826

約数の個数: 16

約数和(自身を含む): 29038080

約数和(自身を除く): 7822797

約数列:

[1, 3, 47, 141, 379, 397, 1137, 1191, 17813, 18659, 53439, 55977, 150463, 451389, 7071761, 21215283]

約数ペア:

[(1, 21215283), (3, 7071761), (47, 451389), (141, 150463), (379, 55977), (397, 53439), (1137, 18659), (1191, 17813)]