8406290

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{2161}}^1$

素因数の和:2557

約数の個数: 16

約数和(自身を含む): 15177240

約数和(自身を除く): 6770950

約数列:

[1, 2, 5, 10, 389, 778, 1945, 2161, 3890, 4322, 10805, 21610, 840629, 1681258, 4203145, 8406290]

約数ペア:

[(1, 8406290), (2, 4203145), (5, 1681258), (10, 840629), (389, 21610), (778, 10805), (1945, 4322), (2161, 3890)]