12880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1$

素因数の和:43

約数の個数: 40

約数和(自身を含む): 35712

約数和(自身を除く): 22832

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 322, 368, 460, 560, 644, 805, 920, 1288, 1610, 1840, 2576, 3220, 6440, 12880]

約数ペア:

[(1, 12880), (2, 6440), (4, 3220), (5, 2576), (7, 1840), (8, 1610), (10, 1288), (14, 920), (16, 805), (20, 644), (23, 560), (28, 460), (35, 368), (40, 322), (46, 280), (56, 230), (70, 184), (80, 161), (92, 140), (112, 115)]