2013121480

素因数分解:

$2^3\times 5^1\times {\mathrm{2663}}^1\times {\mathrm{18899}}^1$

素因数の和:21573

約数の個数: 32

約数和(自身を含む): 4531464000

約数和(自身を除く): 2518342520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2663, 5326, 10652, 13315, 18899, 21304, 26630, 37798, 53260, 75596, 94495, 106520, 151192, 188990, 377980, 755960, 50328037, 100656074, 201312148, 251640185, 402624296, 503280370, 1006560740, 2013121480]

約数ペア:

[(1, 2013121480), (2, 1006560740), (4, 503280370), (5, 402624296), (8, 251640185), (10, 201312148), (20, 100656074), (40, 50328037), (2663, 755960), (5326, 377980), (10652, 188990), (13315, 151192), (18899, 106520), (21304, 94495), (26630, 75596), (37798, 53260)]