215681151

素因数分解:

$3^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{78401}}^1$

素因数の和:78542

約数の個数: 16

約数和(自身を含む): 331170048

約数和(自身を除く): 115488897

約数列:

[1, 3, 7, 21, 131, 393, 917, 2751, 78401, 235203, 548807, 1646421, 10270531, 30811593, 71893717, 215681151]

約数ペア:

[(1, 215681151), (3, 71893717), (7, 30811593), (21, 10270531), (131, 1646421), (393, 548807), (917, 235203), (2751, 78401)]