21191092

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{407521}}^1$

素因数の和:407538

約数の個数: 12

約数和(自身を含む): 39937156

約数和(自身を除く): 18746064

約数列:

[1, 2, 4, 13, 26, 52, 407521, 815042, 1630084, 5297773, 10595546, 21191092]

約数ペア:

[(1, 21191092), (2, 10595546), (4, 5297773), (13, 1630084), (26, 815042), (52, 407521)]