81159876

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{139}}^1\times {\mathrm{331}}^1$

素因数の和:494

約数の個数: 108

約数和(自身を含む): 241091760

約数和(自身を除く): 159931884

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 49, 63, 84, 98, 126, 139, 147, 196, 252, 278, 294, 331, 417, 441, 556, 588, 662, 834, 882, 973, 993, 1251, 1324, 1668, 1764, 1946, 1986, 2317, 2502, 2919, 2979, 3892, 3972, 4634, 5004, 5838, 5958, 6811, 6951, 8757, 9268, 11676, 11916, 13622, 13902, 16219, 17514, 20433, 20853, 27244, 27804, 32438, 35028, 40866, 41706, 46009, 48657, 61299, 64876, 81732, 83412, 92018, 97314, 122598, 138027, 145971, 184036, 194628, 245196, 276054, 291942, 322063, 414081, 552108, 583884, 644126, 828162, 966189, 1288252, 1656324, 1932378, 2254441, 2898567, 3864756, 4508882, 5797134, 6763323, 9017764, 11594268, 13526646, 20289969, 27053292, 40579938, 81159876]

約数ペア:

[(1, 81159876), (2, 40579938), (3, 27053292), (4, 20289969), (6, 13526646), (7, 11594268), (9, 9017764), (12, 6763323), (14, 5797134), (18, 4508882), (21, 3864756), (28, 2898567), (36, 2254441), (42, 1932378), (49, 1656324), (63, 1288252), (84, 966189), (98, 828162), (126, 644126), (139, 583884), (147, 552108), (196, 414081), (252, 322063), (278, 291942), (294, 276054), (331, 245196), (417, 194628), (441, 184036), (556, 145971), (588, 138027), (662, 122598), (834, 97314), (882, 92018), (973, 83412), (993, 81732), (1251, 64876), (1324, 61299), (1668, 48657), (1764, 46009), (1946, 41706), (1986, 40866), (2317, 35028), (2502, 32438), (2919, 27804), (2979, 27244), (3892, 20853), (3972, 20433), (4634, 17514), (5004, 16219), (5838, 13902), (5958, 13622), (6811, 11916), (6951, 11676), (8757, 9268)]