26400280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{15349}}^1$

素因数の和:15403

約数の個数: 32

約数和(自身を含む): 60786000

約数和(自身を除く): 34385720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 15349, 30698, 61396, 76745, 122792, 153490, 306980, 613960, 660007, 1320014, 2640028, 3300035, 5280056, 6600070, 13200140, 26400280]

約数ペア:

[(1, 26400280), (2, 13200140), (4, 6600070), (5, 5280056), (8, 3300035), (10, 2640028), (20, 1320014), (40, 660007), (43, 613960), (86, 306980), (172, 153490), (215, 122792), (344, 76745), (430, 61396), (860, 30698), (1720, 15349)]