21563378

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{281}}^1$

素因数の和:398

約数の個数: 32

約数和(自身を含む): 35877168

約数和(自身を除く): 14313790

約数列:

[1, 2, 17, 34, 37, 61, 74, 122, 281, 562, 629, 1037, 1258, 2074, 2257, 4514, 4777, 9554, 10397, 17141, 20794, 34282, 38369, 76738, 176749, 291397, 353498, 582794, 634217, 1268434, 10781689, 21563378]

約数ペア:

[(1, 21563378), (2, 10781689), (17, 1268434), (34, 634217), (37, 582794), (61, 353498), (74, 291397), (122, 176749), (281, 76738), (562, 38369), (629, 34282), (1037, 20794), (1258, 17141), (2074, 10397), (2257, 9554), (4514, 4777)]