18785920

素因数分解:

$2^7\times 5^1\times {\mathrm{149}}^1\times {\mathrm{197}}^1$

素因数の和:365

約数の個数: 64

約数和(自身を含む): 45441000

約数和(自身を除く): 26655080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 149, 160, 197, 298, 320, 394, 596, 640, 745, 788, 985, 1192, 1490, 1576, 1970, 2384, 2980, 3152, 3940, 4768, 5960, 6304, 7880, 9536, 11920, 12608, 15760, 19072, 23840, 25216, 29353, 31520, 47680, 58706, 63040, 95360, 117412, 126080, 146765, 234824, 293530, 469648, 587060, 939296, 1174120, 1878592, 2348240, 3757184, 4696480, 9392960, 18785920]

約数ペア:

[(1, 18785920), (2, 9392960), (4, 4696480), (5, 3757184), (8, 2348240), (10, 1878592), (16, 1174120), (20, 939296), (32, 587060), (40, 469648), (64, 293530), (80, 234824), (128, 146765), (149, 126080), (160, 117412), (197, 95360), (298, 63040), (320, 58706), (394, 47680), (596, 31520), (640, 29353), (745, 25216), (788, 23840), (985, 19072), (1192, 15760), (1490, 12608), (1576, 11920), (1970, 9536), (2384, 7880), (2980, 6304), (3152, 5960), (3940, 4768)]