21520512208

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103464001}}^1$

素因数の和:103464022

約数の個数: 20

約数和(自身を含む): 44903376868

約数和(自身を除く): 23382864660

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103464001, 206928002, 413856004, 827712008, 1345032013, 1655424016, 2690064026, 5380128052, 10760256104, 21520512208]

約数ペア:

[(1, 21520512208), (2, 10760256104), (4, 5380128052), (8, 2690064026), (13, 1655424016), (16, 1345032013), (26, 827712008), (52, 413856004), (104, 206928002), (208, 103464001)]