20912864

素因数分解:

$2^5\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1049}}^1$

素因数の和:1155

約数の個数: 48

約数和(自身を含む): 47628000

約数和(自身を除く): 26715136

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 89, 112, 178, 224, 356, 623, 712, 1049, 1246, 1424, 2098, 2492, 2848, 4196, 4984, 7343, 8392, 9968, 14686, 16784, 19936, 29372, 33568, 58744, 93361, 117488, 186722, 234976, 373444, 653527, 746888, 1307054, 1493776, 2614108, 2987552, 5228216, 10456432, 20912864]

約数ペア:

[(1, 20912864), (2, 10456432), (4, 5228216), (7, 2987552), (8, 2614108), (14, 1493776), (16, 1307054), (28, 746888), (32, 653527), (56, 373444), (89, 234976), (112, 186722), (178, 117488), (224, 93361), (356, 58744), (623, 33568), (712, 29372), (1049, 19936), (1246, 16784), (1424, 14686), (2098, 9968), (2492, 8392), (2848, 7343), (4196, 4984)]