13205840

素因数分解:

$2^4\times 5^1\times {\mathrm{383}}^1\times {\mathrm{431}}^1$

素因数の和:827

約数の個数: 40

約数和(自身を含む): 30855168

約数和(自身を除く): 17649328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 383, 431, 766, 862, 1532, 1724, 1915, 2155, 3064, 3448, 3830, 4310, 6128, 6896, 7660, 8620, 15320, 17240, 30640, 34480, 165073, 330146, 660292, 825365, 1320584, 1650730, 2641168, 3301460, 6602920, 13205840]

約数ペア:

[(1, 13205840), (2, 6602920), (4, 3301460), (5, 2641168), (8, 1650730), (10, 1320584), (16, 825365), (20, 660292), (40, 330146), (80, 165073), (383, 34480), (431, 30640), (766, 17240), (862, 15320), (1532, 8620), (1724, 7660), (1915, 6896), (2155, 6128), (3064, 4310), (3448, 3830)]