397398813

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{995987}}^1$

素因数の和:996016

約数の個数: 16

約数和(自身を含む): 637432320

約数和(自身を除く): 240033507

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 995987, 2987961, 6971909, 18923753, 20915727, 56771259, 132466271, 397398813]

約数ペア:

[(1, 397398813), (3, 132466271), (7, 56771259), (19, 20915727), (21, 18923753), (57, 6971909), (133, 2987961), (399, 995987)]