21047962

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{643}}^1\times {\mathrm{1259}}^1$

素因数の和:1917

約数の個数: 16

約数和(自身を含む): 34080480

約数和(自身を除く): 13032518

約数列:

[1, 2, 13, 26, 643, 1259, 1286, 2518, 8359, 16367, 16718, 32734, 809537, 1619074, 10523981, 21047962]

約数ペア:

[(1, 21047962), (2, 10523981), (13, 1619074), (26, 809537), (643, 32734), (1259, 16718), (1286, 16367), (2518, 8359)]