81357568

素因数分解:

$2^8\times {\mathrm{199}}^1\times {\mathrm{1597}}^1$

素因数の和:1812

約数の個数: 36

約数和(自身を含む): 163315600

約数和(自身を除く): 81958032

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 199, 256, 398, 796, 1592, 1597, 3184, 3194, 6368, 6388, 12736, 12776, 25472, 25552, 50944, 51104, 102208, 204416, 317803, 408832, 635606, 1271212, 2542424, 5084848, 10169696, 20339392, 40678784, 81357568]

約数ペア:

[(1, 81357568), (2, 40678784), (4, 20339392), (8, 10169696), (16, 5084848), (32, 2542424), (64, 1271212), (128, 635606), (199, 408832), (256, 317803), (398, 204416), (796, 102208), (1592, 51104), (1597, 50944), (3184, 25552), (3194, 25472), (6368, 12776), (6388, 12736)]