20920077980

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1039}}^1\times {\mathrm{5059}}^1$

素因数の和:6306

約数の個数: 48

約数和(自身を含む): 44204160000

約数和(自身を除く): 23284082020

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1039, 1990, 2078, 3980, 4156, 5059, 5195, 10118, 10390, 20236, 20780, 25295, 50590, 101180, 206761, 413522, 827044, 1006741, 1033805, 2013482, 2067610, 4026964, 4135220, 5033705, 5256301, 10067410, 10512602, 20134820, 21025204, 26281505, 52563010, 105126020, 1046003899, 2092007798, 4184015596, 5230019495, 10460038990, 20920077980]

約数ペア:

[(1, 20920077980), (2, 10460038990), (4, 5230019495), (5, 4184015596), (10, 2092007798), (20, 1046003899), (199, 105126020), (398, 52563010), (796, 26281505), (995, 21025204), (1039, 20134820), (1990, 10512602), (2078, 10067410), (3980, 5256301), (4156, 5033705), (5059, 4135220), (5195, 4026964), (10118, 2067610), (10390, 2013482), (20236, 1033805), (20780, 1006741), (25295, 827044), (50590, 413522), (101180, 206761)]