18987346

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1741}}^1$

素因数の和:1810

約数の個数: 32

約数和(自身を含む): 35118720

約数和(自身を除く): 16131374

約数列:

[1, 2, 7, 14, 19, 38, 41, 82, 133, 266, 287, 574, 779, 1558, 1741, 3482, 5453, 10906, 12187, 24374, 33079, 66158, 71381, 142762, 231553, 463106, 499667, 999334, 1356239, 2712478, 9493673, 18987346]

約数ペア:

[(1, 18987346), (2, 9493673), (7, 2712478), (14, 1356239), (19, 999334), (38, 499667), (41, 463106), (82, 231553), (133, 142762), (266, 71381), (287, 66158), (574, 33079), (779, 24374), (1558, 12187), (1741, 10906), (3482, 5453)]