21861225

素因数分解:

$3^3\times 5^2\times {\mathrm{139}}^1\times {\mathrm{233}}^1$

素因数の和:391

約数の個数: 48

約数和(自身を含む): 40622400

約数和(自身を除く): 18761175

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 139, 225, 233, 417, 675, 695, 699, 1165, 1251, 2085, 2097, 3475, 3495, 3753, 5825, 6255, 6291, 10425, 10485, 17475, 18765, 31275, 31455, 32387, 52425, 93825, 97161, 157275, 161935, 291483, 485805, 809675, 874449, 1457415, 2429025, 4372245, 7287075, 21861225]

約数ペア:

[(1, 21861225), (3, 7287075), (5, 4372245), (9, 2429025), (15, 1457415), (25, 874449), (27, 809675), (45, 485805), (75, 291483), (135, 161935), (139, 157275), (225, 97161), (233, 93825), (417, 52425), (675, 32387), (695, 31455), (699, 31275), (1165, 18765), (1251, 17475), (2085, 10485), (2097, 10425), (3475, 6291), (3495, 6255), (3753, 5825)]