21663021

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{389}}^1\times {\mathrm{977}}^1$

素因数の和:1388

約数の個数: 16

約数和(自身を含む): 30513600

約数和(自身を除く): 8850579

約数列:

[1, 3, 19, 57, 389, 977, 1167, 2931, 7391, 18563, 22173, 55689, 380053, 1140159, 7221007, 21663021]

約数ペア:

[(1, 21663021), (3, 7221007), (19, 1140159), (57, 380053), (389, 55689), (977, 22173), (1167, 18563), (2931, 7391)]