21386585

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{601}}^1\times {\mathrm{647}}^1$

素因数の和:1264

約数の個数: 16

約数和(自身を含む): 28086912

約数和(自身を除く): 6700327

約数列:

[1, 5, 11, 55, 601, 647, 3005, 3235, 6611, 7117, 33055, 35585, 388847, 1944235, 4277317, 21386585]

約数ペア:

[(1, 21386585), (5, 4277317), (11, 1944235), (55, 388847), (601, 35585), (647, 33055), (3005, 7117), (3235, 6611)]