16720866

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{163}}^1$

素因数の和:351

約数の個数: 48

約数和(自身を含む): 37608480

約数和(自身を除く): 20887614

約数列:

[1, 2, 3, 6, 9, 18, 41, 82, 123, 139, 163, 246, 278, 326, 369, 417, 489, 738, 834, 978, 1251, 1467, 2502, 2934, 5699, 6683, 11398, 13366, 17097, 20049, 22657, 34194, 40098, 45314, 51291, 60147, 67971, 102582, 120294, 135942, 203913, 407826, 928937, 1857874, 2786811, 5573622, 8360433, 16720866]

約数ペア:

[(1, 16720866), (2, 8360433), (3, 5573622), (6, 2786811), (9, 1857874), (18, 928937), (41, 407826), (82, 203913), (123, 135942), (139, 120294), (163, 102582), (246, 67971), (278, 60147), (326, 51291), (369, 45314), (417, 40098), (489, 34194), (738, 22657), (834, 20049), (978, 17097), (1251, 13366), (1467, 11398), (2502, 6683), (2934, 5699)]