18245968

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{87721}}^1$

素因数の和:87742

約数の個数: 20

約数和(自身を含む): 38071348

約数和(自身を除く): 19825380

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 87721, 175442, 350884, 701768, 1140373, 1403536, 2280746, 4561492, 9122984, 18245968]

約数ペア:

[(1, 18245968), (2, 9122984), (4, 4561492), (8, 2280746), (13, 1403536), (16, 1140373), (26, 701768), (52, 350884), (104, 175442), (208, 87721)]