21516328

素因数分解:

$2^3\times {\mathrm{503}}^1\times {\mathrm{5347}}^1$

素因数の和:5856

約数の個数: 16

約数和(自身を含む): 40430880

約数和(自身を除く): 18914552

約数列:

[1, 2, 4, 8, 503, 1006, 2012, 4024, 5347, 10694, 21388, 42776, 2689541, 5379082, 10758164, 21516328]

約数ペア:

[(1, 21516328), (2, 10758164), (4, 5379082), (8, 2689541), (503, 42776), (1006, 21388), (2012, 10694), (4024, 5347)]