208021443

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{521357}}^1$

素因数の和:521386

約数の個数: 16

約数和(自身を含む): 333669120

約数和(自身を除く): 125647677

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 521357, 1564071, 3649499, 9905783, 10948497, 29717349, 69340481, 208021443]

約数ペア:

[(1, 208021443), (3, 69340481), (7, 29717349), (19, 10948497), (21, 9905783), (57, 3649499), (133, 1564071), (399, 521357)]