215893321

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{337}}^1\times {\mathrm{1289}}^1$

素因数の和:1704

約数の個数: 16

約数和(自身を含む): 251147520

約数和(自身を除く): 35254199

約数列:

[1, 7, 71, 337, 497, 1289, 2359, 9023, 23927, 91519, 167489, 434393, 640633, 3040751, 30841903, 215893321]

約数ペア:

[(1, 215893321), (7, 30841903), (71, 3040751), (337, 640633), (497, 434393), (1289, 167489), (2359, 91519), (9023, 23927)]