55551321

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{257}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 95307264

約数和(自身を除く): 39755943

約数列:

[1, 3, 7, 9, 21, 47, 63, 73, 141, 219, 257, 329, 423, 511, 657, 771, 987, 1533, 1799, 2313, 2961, 3431, 4599, 5397, 10293, 12079, 16191, 18761, 24017, 30879, 36237, 56283, 72051, 84553, 108711, 131327, 168849, 216153, 253659, 393981, 760977, 881767, 1181943, 2645301, 6172369, 7935903, 18517107, 55551321]

約数ペア:

[(1, 55551321), (3, 18517107), (7, 7935903), (9, 6172369), (21, 2645301), (47, 1181943), (63, 881767), (73, 760977), (141, 393981), (219, 253659), (257, 216153), (329, 168849), (423, 131327), (511, 108711), (657, 84553), (771, 72051), (987, 56283), (1533, 36237), (1799, 30879), (2313, 24017), (2961, 18761), (3431, 16191), (4599, 12079), (5397, 10293)]