638599773

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{428303}}^1$

素因数の和:428384

約数の個数: 16

約数和(自身を含む): 986812416

約数和(自身を除く): 348212643

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 428303, 1284909, 2998121, 8994363, 30409513, 91228539, 212866591, 638599773]

約数ペア:

[(1, 638599773), (3, 212866591), (7, 91228539), (21, 30409513), (71, 8994363), (213, 2998121), (497, 1284909), (1491, 428303)]