20131408

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{1069}}^1$

素因数の和:1195

約数の個数: 40

約数和(自身を含む): 42988320

約数和(自身を除く): 22856912

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 107, 176, 214, 428, 856, 1069, 1177, 1712, 2138, 2354, 4276, 4708, 8552, 9416, 11759, 17104, 18832, 23518, 47036, 94072, 114383, 188144, 228766, 457532, 915064, 1258213, 1830128, 2516426, 5032852, 10065704, 20131408]

約数ペア:

[(1, 20131408), (2, 10065704), (4, 5032852), (8, 2516426), (11, 1830128), (16, 1258213), (22, 915064), (44, 457532), (88, 228766), (107, 188144), (176, 114383), (214, 94072), (428, 47036), (856, 23518), (1069, 18832), (1177, 17104), (1712, 11759), (2138, 9416), (2354, 8552), (4276, 4708)]