21870476

素因数分解:

$2^2\times {\mathrm{1321}}^1\times {\mathrm{4139}}^1$

素因数の和:5464

約数の個数: 12

約数和(自身を含む): 38311560

約数和(自身を除く): 16441084

約数列:

[1, 2, 4, 1321, 2642, 4139, 5284, 8278, 16556, 5467619, 10935238, 21870476]

約数ペア:

[(1, 21870476), (2, 10935238), (4, 5467619), (1321, 16556), (2642, 8278), (4139, 5284)]