8913040

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2591}}^1$

素因数の和:2647

約数の個数: 40

約数和(自身を含む): 21212928

約数和(自身を除く): 12299888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 2591, 3440, 5182, 10364, 12955, 20728, 25910, 41456, 51820, 103640, 111413, 207280, 222826, 445652, 557065, 891304, 1114130, 1782608, 2228260, 4456520, 8913040]

約数ペア:

[(1, 8913040), (2, 4456520), (4, 2228260), (5, 1782608), (8, 1114130), (10, 891304), (16, 557065), (20, 445652), (40, 222826), (43, 207280), (80, 111413), (86, 103640), (172, 51820), (215, 41456), (344, 25910), (430, 20728), (688, 12955), (860, 10364), (1720, 5182), (2591, 3440)]