20171447548

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{643}}^1\times {\mathrm{18367}}^1$

素因数の和:19082

約数の個数: 48

約数和(自身を含む): 41070260224

約数和(自身を除く): 20898812676

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 643, 854, 1286, 1708, 2572, 4501, 9002, 18004, 18367, 36734, 39223, 73468, 78446, 128569, 156892, 257138, 274561, 514276, 549122, 1098244, 1120387, 2240774, 4481548, 7842709, 11809981, 15685418, 23619962, 31370836, 47239924, 82669867, 165339734, 330679468, 720408841, 1440817682, 2881635364, 5042861887, 10085723774, 20171447548]

約数ペア:

[(1, 20171447548), (2, 10085723774), (4, 5042861887), (7, 2881635364), (14, 1440817682), (28, 720408841), (61, 330679468), (122, 165339734), (244, 82669867), (427, 47239924), (643, 31370836), (854, 23619962), (1286, 15685418), (1708, 11809981), (2572, 7842709), (4501, 4481548), (9002, 2240774), (18004, 1120387), (18367, 1098244), (36734, 549122), (39223, 514276), (73468, 274561), (78446, 257138), (128569, 156892)]