18747520

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2663}}^1$

素因数の和:2693

約数の個数: 64

約数和(自身を含む): 48911040

約数和(自身を除く): 30163520

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 320, 352, 440, 640, 704, 880, 1408, 1760, 2663, 3520, 5326, 7040, 10652, 13315, 21304, 26630, 29293, 42608, 53260, 58586, 85216, 106520, 117172, 146465, 170432, 213040, 234344, 292930, 340864, 426080, 468688, 585860, 852160, 937376, 1171720, 1704320, 1874752, 2343440, 3749504, 4686880, 9373760, 18747520]

約数ペア:

[(1, 18747520), (2, 9373760), (4, 4686880), (5, 3749504), (8, 2343440), (10, 1874752), (11, 1704320), (16, 1171720), (20, 937376), (22, 852160), (32, 585860), (40, 468688), (44, 426080), (55, 340864), (64, 292930), (80, 234344), (88, 213040), (110, 170432), (128, 146465), (160, 117172), (176, 106520), (220, 85216), (320, 58586), (352, 53260), (440, 42608), (640, 29293), (704, 26630), (880, 21304), (1408, 13315), (1760, 10652), (2663, 7040), (3520, 5326)]