28640235

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{761}}^1$

素因数の和:975

約数の個数: 32

約数和(自身を含む): 49670208

約数和(自身を除く): 21029973

約数列:

[1, 3, 5, 13, 15, 39, 65, 193, 195, 579, 761, 965, 2283, 2509, 2895, 3805, 7527, 9893, 11415, 12545, 29679, 37635, 49465, 146873, 148395, 440619, 734365, 1909349, 2203095, 5728047, 9546745, 28640235]

約数ペア:

[(1, 28640235), (3, 9546745), (5, 5728047), (13, 2203095), (15, 1909349), (39, 734365), (65, 440619), (193, 148395), (195, 146873), (579, 49465), (761, 37635), (965, 29679), (2283, 12545), (2509, 11415), (2895, 9893), (3805, 7527)]