21621579

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{27827}}^1$

素因数の和:27874

約数の個数: 16

約数和(自身を含む): 33838848

約数和(自身を除く): 12217269

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 27827, 83481, 194789, 584367, 1029599, 3088797, 7207193, 21621579]

約数ペア:

[(1, 21621579), (3, 7207193), (7, 3088797), (21, 1029599), (37, 584367), (111, 194789), (259, 83481), (777, 27827)]