1838721320

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{71713}}^1$

素因数の和:72365

約数の個数: 32

約数和(自身を含む): 4143634920

約数和(自身を除く): 2304913600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 2564, 3205, 5128, 6410, 12820, 25640, 71713, 143426, 286852, 358565, 573704, 717130, 1434260, 2868520, 45968033, 91936066, 183872132, 229840165, 367744264, 459680330, 919360660, 1838721320]

約数ペア:

[(1, 1838721320), (2, 919360660), (4, 459680330), (5, 367744264), (8, 229840165), (10, 183872132), (20, 91936066), (40, 45968033), (641, 2868520), (1282, 1434260), (2564, 717130), (3205, 573704), (5128, 358565), (6410, 286852), (12820, 143426), (25640, 71713)]