13981640

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{811}}^1$

素因数の和:1253

約数の個数: 32

約数和(自身を含む): 31570560

約数和(自身を除く): 17588920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 811, 862, 1622, 1724, 2155, 3244, 3448, 4055, 4310, 6488, 8110, 8620, 16220, 17240, 32440, 349541, 699082, 1398164, 1747705, 2796328, 3495410, 6990820, 13981640]

約数ペア:

[(1, 13981640), (2, 6990820), (4, 3495410), (5, 2796328), (8, 1747705), (10, 1398164), (20, 699082), (40, 349541), (431, 32440), (811, 17240), (862, 16220), (1622, 8620), (1724, 8110), (2155, 6488), (3244, 4310), (3448, 4055)]