20986686721

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{157637}}^1$

素因数の和:157694

約数の個数: 48

約数和(自身を含む): 30190829760

約数和(自身を除く): 9204143039

約数列:

[1, 7, 11, 13, 19, 49, 77, 91, 133, 143, 209, 247, 539, 637, 931, 1001, 1463, 1729, 2717, 7007, 10241, 12103, 19019, 133133, 157637, 1103459, 1734007, 2049281, 2995103, 7724213, 12138049, 14344967, 20965721, 22542091, 32946133, 38936339, 84966343, 100414769, 146760047, 157794637, 230622931, 272554373, 428299729, 1104562459, 1614360517, 1907880611, 2998098103, 20986686721]

約数ペア:

[(1, 20986686721), (7, 2998098103), (11, 1907880611), (13, 1614360517), (19, 1104562459), (49, 428299729), (77, 272554373), (91, 230622931), (133, 157794637), (143, 146760047), (209, 100414769), (247, 84966343), (539, 38936339), (637, 32946133), (931, 22542091), (1001, 20965721), (1463, 14344967), (1729, 12138049), (2717, 7724213), (7007, 2995103), (10241, 2049281), (12103, 1734007), (19019, 1103459), (133133, 157637)]