20409718

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:149

約数の個数: 48

約数和(自身を含む): 38035872

約数和(自身を除く): 17626154

約数列:

[1, 2, 7, 14, 31, 37, 41, 62, 74, 82, 217, 259, 287, 434, 518, 574, 961, 1147, 1271, 1517, 1922, 2294, 2542, 3034, 6727, 8029, 8897, 10619, 13454, 16058, 17794, 21238, 35557, 39401, 47027, 71114, 78802, 94054, 248899, 275807, 329189, 497798, 551614, 658378, 1457837, 2915674, 10204859, 20409718]

約数ペア:

[(1, 20409718), (2, 10204859), (7, 2915674), (14, 1457837), (31, 658378), (37, 551614), (41, 497798), (62, 329189), (74, 275807), (82, 248899), (217, 94054), (259, 78802), (287, 71114), (434, 47027), (518, 39401), (574, 35557), (961, 21238), (1147, 17794), (1271, 16058), (1517, 13454), (1922, 10619), (2294, 8897), (2542, 8029), (3034, 6727)]