21056727

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{3251}}^1$

素因数の和:3398

約数の個数: 16

約数和(自身を含む): 29970432

約数和(自身を除く): 8913705

約数列:

[1, 3, 17, 51, 127, 381, 2159, 3251, 6477, 9753, 55267, 165801, 412877, 1238631, 7018909, 21056727]

約数ペア:

[(1, 21056727), (3, 7018909), (17, 1238631), (51, 412877), (127, 165801), (381, 55267), (2159, 9753), (3251, 6477)]