21478384

素因数分解:

$2^4\times {\mathrm{103}}^1\times {\mathrm{13033}}^1$

素因数の和:13144

約数の個数: 20

約数和(自身を含む): 42021616

約数和(自身を除く): 20543232

約数列:

[1, 2, 4, 8, 16, 103, 206, 412, 824, 1648, 13033, 26066, 52132, 104264, 208528, 1342399, 2684798, 5369596, 10739192, 21478384]

約数ペア:

[(1, 21478384), (2, 10739192), (4, 5369596), (8, 2684798), (16, 1342399), (103, 208528), (206, 104264), (412, 52132), (824, 26066), (1648, 13033)]