21194025

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 37497600

約数和(自身を除く): 16303575

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 107, 139, 285, 321, 417, 475, 535, 695, 1425, 1605, 2033, 2085, 2641, 2675, 3475, 6099, 7923, 8025, 10165, 10425, 13205, 14873, 30495, 39615, 44619, 50825, 66025, 74365, 152475, 198075, 223095, 282587, 371825, 847761, 1115475, 1412935, 4238805, 7064675, 21194025]

約数ペア:

[(1, 21194025), (3, 7064675), (5, 4238805), (15, 1412935), (19, 1115475), (25, 847761), (57, 371825), (75, 282587), (95, 223095), (107, 198075), (139, 152475), (285, 74365), (321, 66025), (417, 50825), (475, 44619), (535, 39615), (695, 30495), (1425, 14873), (1605, 13205), (2033, 10425), (2085, 10165), (2641, 8025), (2675, 7923), (3475, 6099)]