21080202

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{311}}^1$

素因数の和:419

約数の個数: 64

約数和(自身を含む): 50319360

約数和(自身を除く): 29239158

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 79, 143, 158, 237, 286, 311, 429, 474, 622, 858, 869, 933, 1027, 1738, 1866, 2054, 2607, 3081, 3421, 4043, 5214, 6162, 6842, 8086, 10263, 11297, 12129, 20526, 22594, 24258, 24569, 33891, 44473, 49138, 67782, 73707, 88946, 133419, 147414, 266838, 270259, 319397, 540518, 638794, 810777, 958191, 1621554, 1916382, 3513367, 7026734, 10540101, 21080202]

約数ペア:

[(1, 21080202), (2, 10540101), (3, 7026734), (6, 3513367), (11, 1916382), (13, 1621554), (22, 958191), (26, 810777), (33, 638794), (39, 540518), (66, 319397), (78, 270259), (79, 266838), (143, 147414), (158, 133419), (237, 88946), (286, 73707), (311, 67782), (429, 49138), (474, 44473), (622, 33891), (858, 24569), (869, 24258), (933, 22594), (1027, 20526), (1738, 12129), (1866, 11297), (2054, 10263), (2607, 8086), (3081, 6842), (3421, 6162), (4043, 5214)]