28389825

素因数分解:

$3^3\times 5^2\times {\mathrm{137}}^1\times {\mathrm{307}}^1$

素因数の和:463

約数の個数: 48

約数和(自身を含む): 52704960

約数和(自身を除く): 24315135

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 137, 225, 307, 411, 675, 685, 921, 1233, 1535, 2055, 2763, 3425, 3699, 4605, 6165, 7675, 8289, 10275, 13815, 18495, 23025, 30825, 41445, 42059, 69075, 92475, 126177, 207225, 210295, 378531, 630885, 1051475, 1135593, 1892655, 3154425, 5677965, 9463275, 28389825]

約数ペア:

[(1, 28389825), (3, 9463275), (5, 5677965), (9, 3154425), (15, 1892655), (25, 1135593), (27, 1051475), (45, 630885), (75, 378531), (135, 210295), (137, 207225), (225, 126177), (307, 92475), (411, 69075), (675, 42059), (685, 41445), (921, 30825), (1233, 23025), (1535, 18495), (2055, 13815), (2763, 10275), (3425, 8289), (3699, 7675), (4605, 6165)]