21000388717

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{577}}^1\times {\mathrm{20551}}^1$

素因数の和:21169

約数の個数: 32

約数和(自身を含む): 27369345024

約数和(自身を除く): 6368956307

約数列:

[1, 7, 11, 23, 77, 161, 253, 577, 1771, 4039, 6347, 13271, 20551, 44429, 92897, 143857, 145981, 226061, 472673, 1021867, 1582427, 3308711, 5199403, 11857927, 36395821, 83005489, 130437197, 272732321, 913060379, 1909126247, 3000055531, 21000388717]

約数ペア:

[(1, 21000388717), (7, 3000055531), (11, 1909126247), (23, 913060379), (77, 272732321), (161, 130437197), (253, 83005489), (577, 36395821), (1771, 11857927), (4039, 5199403), (6347, 3308711), (13271, 1582427), (20551, 1021867), (44429, 472673), (92897, 226061), (143857, 145981)]