19718816

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{443}}^1$

素因数の和:573

約数の個数: 48

約数和(自身を含む): 42293664

約数和(自身を除く): 22574848

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 107, 208, 214, 416, 428, 443, 856, 886, 1391, 1712, 1772, 2782, 3424, 3544, 5564, 5759, 7088, 11128, 11518, 14176, 22256, 23036, 44512, 46072, 47401, 92144, 94802, 184288, 189604, 379208, 616213, 758416, 1232426, 1516832, 2464852, 4929704, 9859408, 19718816]

約数ペア:

[(1, 19718816), (2, 9859408), (4, 4929704), (8, 2464852), (13, 1516832), (16, 1232426), (26, 758416), (32, 616213), (52, 379208), (104, 189604), (107, 184288), (208, 94802), (214, 92144), (416, 47401), (428, 46072), (443, 44512), (856, 23036), (886, 22256), (1391, 14176), (1712, 11518), (1772, 11128), (2782, 7088), (3424, 5759), (3544, 5564)]