399776848

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{581071}}^1$

素因数の和:581122

約数の個数: 20

約数和(自身を含む): 792582208

約数和(自身を除く): 392805360

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 581071, 1162142, 2324284, 4648568, 9297136, 24986053, 49972106, 99944212, 199888424, 399776848]

約数ペア:

[(1, 399776848), (2, 199888424), (4, 99944212), (8, 49972106), (16, 24986053), (43, 9297136), (86, 4648568), (172, 2324284), (344, 1162142), (688, 581071)]