21399826

素因数分解:

$2^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{21529}}^1$

素因数の和:21609

約数の個数: 16

約数和(自身を含む): 37203840

約数和(自身を除く): 15804014

約数列:

[1, 2, 7, 14, 71, 142, 497, 994, 21529, 43058, 150703, 301406, 1528559, 3057118, 10699913, 21399826]

約数ペア:

[(1, 21399826), (2, 10699913), (7, 3057118), (14, 1528559), (71, 301406), (142, 150703), (497, 43058), (994, 21529)]