20553896

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{647}}^1$

素因数の和:702

約数の個数: 48

約数和(自身を含む): 44439840

約数和(自身を除く): 23885944

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 152, 209, 361, 418, 647, 722, 836, 1294, 1444, 1672, 2588, 2888, 3971, 5176, 7117, 7942, 12293, 14234, 15884, 24586, 28468, 31768, 49172, 56936, 98344, 135223, 233567, 270446, 467134, 540892, 934268, 1081784, 1868536, 2569237, 5138474, 10276948, 20553896]

約数ペア:

[(1, 20553896), (2, 10276948), (4, 5138474), (8, 2569237), (11, 1868536), (19, 1081784), (22, 934268), (38, 540892), (44, 467134), (76, 270446), (88, 233567), (152, 135223), (209, 98344), (361, 56936), (418, 49172), (647, 31768), (722, 28468), (836, 24586), (1294, 15884), (1444, 14234), (1672, 12293), (2588, 7942), (2888, 7117), (3971, 5176)]