12746920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{7411}}^1$

素因数の和:7465

約数の個数: 32

約数和(自身を含む): 29351520

約数和(自身を除く): 16604600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 7411, 14822, 29644, 37055, 59288, 74110, 148220, 296440, 318673, 637346, 1274692, 1593365, 2549384, 3186730, 6373460, 12746920]

約数ペア:

[(1, 12746920), (2, 6373460), (4, 3186730), (5, 2549384), (8, 1593365), (10, 1274692), (20, 637346), (40, 318673), (43, 296440), (86, 148220), (172, 74110), (215, 59288), (344, 37055), (430, 29644), (860, 14822), (1720, 7411)]