20801508

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{443}}^1$

素因数の和:513

約数の個数: 96

約数和(自身を含む): 61264896

約数和(自身を除く): 40463388

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 42, 43, 52, 78, 84, 86, 91, 129, 156, 172, 182, 258, 273, 301, 364, 443, 516, 546, 559, 602, 886, 903, 1092, 1118, 1204, 1329, 1677, 1772, 1806, 2236, 2658, 3101, 3354, 3612, 3913, 5316, 5759, 6202, 6708, 7826, 9303, 11518, 11739, 12404, 15652, 17277, 18606, 19049, 23036, 23478, 34554, 37212, 38098, 40313, 46956, 57147, 69108, 76196, 80626, 114294, 120939, 133343, 161252, 228588, 241878, 247637, 266686, 400029, 483756, 495274, 533372, 742911, 800058, 990548, 1485822, 1600116, 1733459, 2971644, 3466918, 5200377, 6933836, 10400754, 20801508]

約数ペア:

[(1, 20801508), (2, 10400754), (3, 6933836), (4, 5200377), (6, 3466918), (7, 2971644), (12, 1733459), (13, 1600116), (14, 1485822), (21, 990548), (26, 800058), (28, 742911), (39, 533372), (42, 495274), (43, 483756), (52, 400029), (78, 266686), (84, 247637), (86, 241878), (91, 228588), (129, 161252), (156, 133343), (172, 120939), (182, 114294), (258, 80626), (273, 76196), (301, 69108), (364, 57147), (443, 46956), (516, 40313), (546, 38098), (559, 37212), (602, 34554), (886, 23478), (903, 23036), (1092, 19049), (1118, 18606), (1204, 17277), (1329, 15652), (1677, 12404), (1772, 11739), (1806, 11518), (2236, 9303), (2658, 7826), (3101, 6708), (3354, 6202), (3612, 5759), (3913, 5316)]