21280425

素因数分解:

$3^1\times 5^2\times {\mathrm{47}}^1\times {\mathrm{6037}}^1$

素因数の和:6097

約数の個数: 24

約数和(自身を含む): 35938176

約数和(自身を除く): 14657751

約数列:

[1, 3, 5, 15, 25, 47, 75, 141, 235, 705, 1175, 3525, 6037, 18111, 30185, 90555, 150925, 283739, 452775, 851217, 1418695, 4256085, 7093475, 21280425]

約数ペア:

[(1, 21280425), (3, 7093475), (5, 4256085), (15, 1418695), (25, 851217), (47, 452775), (75, 283739), (141, 150925), (235, 90555), (705, 30185), (1175, 18111), (3525, 6037)]