18930760

素因数分解:

$2^3\times 5^1\times {\mathrm{433}}^1\times {\mathrm{1093}}^1$

素因数の和:1537

約数の個数: 32

約数和(自身を含む): 42731640

約数和(自身を除く): 23800880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 433, 866, 1093, 1732, 2165, 2186, 3464, 4330, 4372, 5465, 8660, 8744, 10930, 17320, 21860, 43720, 473269, 946538, 1893076, 2366345, 3786152, 4732690, 9465380, 18930760]

約数ペア:

[(1, 18930760), (2, 9465380), (4, 4732690), (5, 3786152), (8, 2366345), (10, 1893076), (20, 946538), (40, 473269), (433, 43720), (866, 21860), (1093, 17320), (1732, 10930), (2165, 8744), (2186, 8660), (3464, 5465), (4330, 4372)]