399372290

素因数分解:

$2^1\times 5^1\times {\mathrm{1009}}^1\times {\mathrm{39581}}^1$

素因数の和:40597

約数の個数: 16

約数和(自身を含む): 719600760

約数和(自身を除く): 320228470

約数列:

[1, 2, 5, 10, 1009, 2018, 5045, 10090, 39581, 79162, 197905, 395810, 39937229, 79874458, 199686145, 399372290]

約数ペア:

[(1, 399372290), (2, 199686145), (5, 79874458), (10, 39937229), (1009, 395810), (2018, 197905), (5045, 79162), (10090, 39581)]