18988984

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^2\times {\mathrm{641}}^1$

素因数の和:700

約数の個数: 48

約数和(自身を含む): 42603120

約数和(自身を除く): 23614136

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 92, 161, 184, 322, 529, 641, 644, 1058, 1282, 1288, 2116, 2564, 3703, 4232, 4487, 5128, 7406, 8974, 14743, 14812, 17948, 29486, 29624, 35896, 58972, 103201, 117944, 206402, 339089, 412804, 678178, 825608, 1356356, 2373623, 2712712, 4747246, 9494492, 18988984]

約数ペア:

[(1, 18988984), (2, 9494492), (4, 4747246), (7, 2712712), (8, 2373623), (14, 1356356), (23, 825608), (28, 678178), (46, 412804), (56, 339089), (92, 206402), (161, 117944), (184, 103201), (322, 58972), (529, 35896), (641, 29624), (644, 29486), (1058, 17948), (1282, 14812), (1288, 14743), (2116, 8974), (2564, 7406), (3703, 5128), (4232, 4487)]