64888720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1451}}^1$

素因数の和:1520

約数の個数: 80

約数和(自身を含む): 166364352

約数和(自身を除く): 101475632

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 52, 65, 80, 86, 104, 130, 172, 208, 215, 260, 344, 430, 520, 559, 688, 860, 1040, 1118, 1451, 1720, 2236, 2795, 2902, 3440, 4472, 5590, 5804, 7255, 8944, 11180, 11608, 14510, 18863, 22360, 23216, 29020, 37726, 44720, 58040, 62393, 75452, 94315, 116080, 124786, 150904, 188630, 249572, 301808, 311965, 377260, 499144, 623930, 754520, 811109, 998288, 1247860, 1509040, 1622218, 2495720, 3244436, 4055545, 4991440, 6488872, 8111090, 12977744, 16222180, 32444360, 64888720]

約数ペア:

[(1, 64888720), (2, 32444360), (4, 16222180), (5, 12977744), (8, 8111090), (10, 6488872), (13, 4991440), (16, 4055545), (20, 3244436), (26, 2495720), (40, 1622218), (43, 1509040), (52, 1247860), (65, 998288), (80, 811109), (86, 754520), (104, 623930), (130, 499144), (172, 377260), (208, 311965), (215, 301808), (260, 249572), (344, 188630), (430, 150904), (520, 124786), (559, 116080), (688, 94315), (860, 75452), (1040, 62393), (1118, 58040), (1451, 44720), (1720, 37726), (2236, 29020), (2795, 23216), (2902, 22360), (3440, 18863), (4472, 14510), (5590, 11608), (5804, 11180), (7255, 8944)]