20939325

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1493}}^1$

素因数の和:1534

約数の個数: 48

約数和(自身を含む): 40015296

約数和(自身を除く): 19075971

約数列:

[1, 3, 5, 11, 15, 17, 25, 33, 51, 55, 75, 85, 165, 187, 255, 275, 425, 561, 825, 935, 1275, 1493, 2805, 4479, 4675, 7465, 14025, 16423, 22395, 25381, 37325, 49269, 76143, 82115, 111975, 126905, 246345, 279191, 380715, 410575, 634525, 837573, 1231725, 1395955, 1903575, 4187865, 6979775, 20939325]

約数ペア:

[(1, 20939325), (3, 6979775), (5, 4187865), (11, 1903575), (15, 1395955), (17, 1231725), (25, 837573), (33, 634525), (51, 410575), (55, 380715), (75, 279191), (85, 246345), (165, 126905), (187, 111975), (255, 82115), (275, 76143), (425, 49269), (561, 37325), (825, 25381), (935, 22395), (1275, 16423), (1493, 14025), (2805, 7465), (4479, 4675)]