19478025

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{149}}^1$

素因数の和:255

約数の個数: 72

約数和(自身を含む): 40622400

約数和(自身を除く): 21144375

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 83, 105, 149, 175, 225, 249, 315, 415, 447, 525, 581, 745, 747, 1043, 1245, 1341, 1575, 1743, 2075, 2235, 2905, 3129, 3725, 3735, 5215, 5229, 6225, 6705, 8715, 9387, 11175, 12367, 14525, 15645, 18675, 26075, 26145, 33525, 37101, 43575, 46935, 61835, 78225, 86569, 111303, 130725, 185505, 234675, 259707, 309175, 432845, 556515, 779121, 927525, 1298535, 2164225, 2782575, 3895605, 6492675, 19478025]

約数ペア:

[(1, 19478025), (3, 6492675), (5, 3895605), (7, 2782575), (9, 2164225), (15, 1298535), (21, 927525), (25, 779121), (35, 556515), (45, 432845), (63, 309175), (75, 259707), (83, 234675), (105, 185505), (149, 130725), (175, 111303), (225, 86569), (249, 78225), (315, 61835), (415, 46935), (447, 43575), (525, 37101), (581, 33525), (745, 26145), (747, 26075), (1043, 18675), (1245, 15645), (1341, 14525), (1575, 12367), (1743, 11175), (2075, 9387), (2235, 8715), (2905, 6705), (3129, 6225), (3725, 5229), (3735, 5215)]