155657975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^3$

素因数の和:133

約数の個数: 48

約数和(自身を含む): 229032960

約数和(自身を除く): 73374985

約数列:

[1, 5, 11, 19, 25, 31, 55, 95, 155, 209, 275, 341, 475, 589, 775, 961, 1045, 1705, 2945, 4805, 5225, 6479, 8525, 10571, 14725, 18259, 24025, 29791, 32395, 52855, 91295, 148955, 161975, 200849, 264275, 327701, 456475, 566029, 744775, 1004245, 1638505, 2830145, 5021225, 6226319, 8192525, 14150725, 31131595, 155657975]

約数ペア:

[(1, 155657975), (5, 31131595), (11, 14150725), (19, 8192525), (25, 6226319), (31, 5021225), (55, 2830145), (95, 1638505), (155, 1004245), (209, 744775), (275, 566029), (341, 456475), (475, 327701), (589, 264275), (775, 200849), (961, 161975), (1045, 148955), (1705, 91295), (2945, 52855), (4805, 32395), (5225, 29791), (6479, 24025), (8525, 18259), (10571, 14725)]