20996957516

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{4348997}}^1$

素因数の和:4349089

約数の個数: 24

約数和(自身を含む): 39454109856

約数和(自身を除く): 18457152340

約数列:

[1, 2, 4, 17, 34, 68, 71, 142, 284, 1207, 2414, 4828, 4348997, 8697994, 17395988, 73932949, 147865898, 295731796, 308778787, 617557574, 1235115148, 5249239379, 10498478758, 20996957516]

約数ペア:

[(1, 20996957516), (2, 10498478758), (4, 5249239379), (17, 1235115148), (34, 617557574), (68, 308778787), (71, 295731796), (142, 147865898), (284, 73932949), (1207, 17395988), (2414, 8697994), (4828, 4348997)]