1268049320

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{290837}}^1$

素因数の和:290957

約数の個数: 32

約数和(自身を含む): 2879296200

約数和(自身を除く): 1611246880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 290837, 581674, 1163348, 1454185, 2326696, 2908370, 5816740, 11633480, 31701233, 63402466, 126804932, 158506165, 253609864, 317012330, 634024660, 1268049320]

約数ペア:

[(1, 1268049320), (2, 634024660), (4, 317012330), (5, 253609864), (8, 158506165), (10, 126804932), (20, 63402466), (40, 31701233), (109, 11633480), (218, 5816740), (436, 2908370), (545, 2326696), (872, 1454185), (1090, 1163348), (2180, 581674), (4360, 290837)]