20899984

素因数分解:

$2^4\times 7^1\times {\mathrm{191}}^1\times {\mathrm{977}}^1$

素因数の和:1183

約数の個数: 40

約数和(自身を含む): 46568448

約数和(自身を除く): 25668464

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 191, 382, 764, 977, 1337, 1528, 1954, 2674, 3056, 3908, 5348, 6839, 7816, 10696, 13678, 15632, 21392, 27356, 54712, 109424, 186607, 373214, 746428, 1306249, 1492856, 2612498, 2985712, 5224996, 10449992, 20899984]

約数ペア:

[(1, 20899984), (2, 10449992), (4, 5224996), (7, 2985712), (8, 2612498), (14, 1492856), (16, 1306249), (28, 746428), (56, 373214), (112, 186607), (191, 109424), (382, 54712), (764, 27356), (977, 21392), (1337, 15632), (1528, 13678), (1954, 10696), (2674, 7816), (3056, 6839), (3908, 5348)]