20325525

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{347}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 37283328

約数和(自身を除く): 16957803

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 71, 75, 165, 213, 275, 347, 355, 781, 825, 1041, 1065, 1735, 1775, 2343, 3817, 3905, 5205, 5325, 8675, 11451, 11715, 19085, 19525, 24637, 26025, 57255, 58575, 73911, 95425, 123185, 271007, 286275, 369555, 615925, 813021, 1355035, 1847775, 4065105, 6775175, 20325525]

約数ペア:

[(1, 20325525), (3, 6775175), (5, 4065105), (11, 1847775), (15, 1355035), (25, 813021), (33, 615925), (55, 369555), (71, 286275), (75, 271007), (165, 123185), (213, 95425), (275, 73911), (347, 58575), (355, 57255), (781, 26025), (825, 24637), (1041, 19525), (1065, 19085), (1735, 11715), (1775, 11451), (2343, 8675), (3817, 5325), (3905, 5205)]