18881775

素因数分解:

$3^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{2543}}^1$

素因数の和:2573

約数の個数: 48

約数和(自身を含む): 37854720

約数和(自身を除く): 18972945

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 33, 45, 55, 75, 99, 135, 165, 225, 275, 297, 495, 675, 825, 1485, 2475, 2543, 7425, 7629, 12715, 22887, 27973, 38145, 63575, 68661, 83919, 114435, 139865, 190725, 251757, 343305, 419595, 572175, 699325, 755271, 1258785, 1716525, 2097975, 3776355, 6293925, 18881775]

約数ペア:

[(1, 18881775), (3, 6293925), (5, 3776355), (9, 2097975), (11, 1716525), (15, 1258785), (25, 755271), (27, 699325), (33, 572175), (45, 419595), (55, 343305), (75, 251757), (99, 190725), (135, 139865), (165, 114435), (225, 83919), (275, 68661), (297, 63575), (495, 38145), (675, 27973), (825, 22887), (1485, 12715), (2475, 7629), (2543, 7425)]