21978056

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{1553}}^1$

素因数の和:1649

約数の個数: 32

約数和(自身を含む): 43356600

約数和(自身を除く): 21378544

約数列:

[1, 2, 4, 8, 29, 58, 61, 116, 122, 232, 244, 488, 1553, 1769, 3106, 3538, 6212, 7076, 12424, 14152, 45037, 90074, 94733, 180148, 189466, 360296, 378932, 757864, 2747257, 5494514, 10989028, 21978056]

約数ペア:

[(1, 21978056), (2, 10989028), (4, 5494514), (8, 2747257), (29, 757864), (58, 378932), (61, 360296), (116, 189466), (122, 180148), (232, 94733), (244, 90074), (488, 45037), (1553, 14152), (1769, 12424), (3106, 7076), (3538, 6212)]