12809320

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{743}}^1$

素因数の和:1185

約数の個数: 32

約数和(自身を含む): 28926720

約数和(自身を除く): 16117400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 743, 862, 1486, 1724, 2155, 2972, 3448, 3715, 4310, 5944, 7430, 8620, 14860, 17240, 29720, 320233, 640466, 1280932, 1601165, 2561864, 3202330, 6404660, 12809320]

約数ペア:

[(1, 12809320), (2, 6404660), (4, 3202330), (5, 2561864), (8, 1601165), (10, 1280932), (20, 640466), (40, 320233), (431, 29720), (743, 17240), (862, 14860), (1486, 8620), (1724, 7430), (2155, 5944), (2972, 4310), (3448, 3715)]