28688283

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^2$

素因数の和:153

約数の個数: 48

約数和(自身を含む): 48028960

約数和(自身を除く): 19340677

約数列:

[1, 3, 9, 13, 27, 37, 39, 47, 111, 117, 141, 333, 351, 423, 481, 611, 999, 1269, 1443, 1739, 1833, 2209, 4329, 5217, 5499, 6627, 12987, 15651, 16497, 19881, 22607, 28717, 46953, 59643, 67821, 81733, 86151, 203463, 245199, 258453, 610389, 735597, 775359, 1062529, 2206791, 3187587, 9562761, 28688283]

約数ペア:

[(1, 28688283), (3, 9562761), (9, 3187587), (13, 2206791), (27, 1062529), (37, 775359), (39, 735597), (47, 610389), (111, 258453), (117, 245199), (141, 203463), (333, 86151), (351, 81733), (423, 67821), (481, 59643), (611, 46953), (999, 28717), (1269, 22607), (1443, 19881), (1739, 16497), (1833, 15651), (2209, 12987), (4329, 6627), (5217, 5499)]