21561568

素因数分解:

$2^5\times 7^2\times {\mathrm{13751}}^1$

素因数の和:13775

約数の個数: 36

約数和(自身を含む): 49383432

約数和(自身を除く): 27821864

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 98, 112, 196, 224, 392, 784, 1568, 13751, 27502, 55004, 96257, 110008, 192514, 220016, 385028, 440032, 673799, 770056, 1347598, 1540112, 2695196, 3080224, 5390392, 10780784, 21561568]

約数ペア:

[(1, 21561568), (2, 10780784), (4, 5390392), (7, 3080224), (8, 2695196), (14, 1540112), (16, 1347598), (28, 770056), (32, 673799), (49, 440032), (56, 385028), (98, 220016), (112, 192514), (196, 110008), (224, 96257), (392, 55004), (784, 27502), (1568, 13751)]