638783480

素因数分解:

$2^3\times 5^1\times {\mathrm{233}}^1\times {\mathrm{68539}}^1$

素因数の和:68783

約数の個数: 32

約数和(自身を含む): 1443452400

約数和(自身を除く): 804668920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 233, 466, 932, 1165, 1864, 2330, 4660, 9320, 68539, 137078, 274156, 342695, 548312, 685390, 1370780, 2741560, 15969587, 31939174, 63878348, 79847935, 127756696, 159695870, 319391740, 638783480]

約数ペア:

[(1, 638783480), (2, 319391740), (4, 159695870), (5, 127756696), (8, 79847935), (10, 63878348), (20, 31939174), (40, 15969587), (233, 2741560), (466, 1370780), (932, 685390), (1165, 548312), (1864, 342695), (2330, 274156), (4660, 137078), (9320, 68539)]