128895080

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{547}}^1$

素因数の和:738

約数の個数: 64

約数和(自身を含む): 299471040

約数和(自身を除く): 170575960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 137, 172, 215, 274, 344, 430, 547, 548, 685, 860, 1094, 1096, 1370, 1720, 2188, 2735, 2740, 4376, 5470, 5480, 5891, 10940, 11782, 21880, 23521, 23564, 29455, 47042, 47128, 58910, 74939, 94084, 117605, 117820, 149878, 188168, 235210, 235640, 299756, 374695, 470420, 599512, 749390, 940840, 1498780, 2997560, 3222377, 6444754, 12889508, 16111885, 25779016, 32223770, 64447540, 128895080]

約数ペア:

[(1, 128895080), (2, 64447540), (4, 32223770), (5, 25779016), (8, 16111885), (10, 12889508), (20, 6444754), (40, 3222377), (43, 2997560), (86, 1498780), (137, 940840), (172, 749390), (215, 599512), (274, 470420), (344, 374695), (430, 299756), (547, 235640), (548, 235210), (685, 188168), (860, 149878), (1094, 117820), (1096, 117605), (1370, 94084), (1720, 74939), (2188, 58910), (2735, 47128), (2740, 47042), (4376, 29455), (5470, 23564), (5480, 23521), (5891, 21880), (10940, 11782)]