21284145

素因数分解:

$3^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1979}}^1$

素因数の和:2229

約数の個数: 24

約数和(自身を含む): 37065600

約数和(自身を除く): 15781455

約数列:

[1, 3, 5, 9, 15, 45, 239, 717, 1195, 1979, 2151, 3585, 5937, 9895, 10755, 17811, 29685, 89055, 472981, 1418943, 2364905, 4256829, 7094715, 21284145]

約数ペア:

[(1, 21284145), (3, 7094715), (5, 4256829), (9, 2364905), (15, 1418943), (45, 472981), (239, 89055), (717, 29685), (1195, 17811), (1979, 10755), (2151, 9895), (3585, 5937)]