209371396

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:261

約数の個数: 72

約数和(自身を含む): 417790464

約数和(自身を除く): 208419068

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 97, 103, 124, 169, 194, 206, 338, 388, 403, 412, 676, 806, 1261, 1339, 1612, 2522, 2678, 3007, 3193, 5044, 5239, 5356, 6014, 6386, 9991, 10478, 12028, 12772, 16393, 17407, 19982, 20956, 32786, 34814, 39091, 39964, 41509, 65572, 69628, 78182, 83018, 129883, 156364, 166036, 259766, 309721, 508183, 519532, 539617, 619442, 1016366, 1079234, 1238884, 1688479, 2032732, 2158468, 3376958, 4026373, 6753916, 8052746, 16105492, 52342849, 104685698, 209371396]

約数ペア:

[(1, 209371396), (2, 104685698), (4, 52342849), (13, 16105492), (26, 8052746), (31, 6753916), (52, 4026373), (62, 3376958), (97, 2158468), (103, 2032732), (124, 1688479), (169, 1238884), (194, 1079234), (206, 1016366), (338, 619442), (388, 539617), (403, 519532), (412, 508183), (676, 309721), (806, 259766), (1261, 166036), (1339, 156364), (1612, 129883), (2522, 83018), (2678, 78182), (3007, 69628), (3193, 65572), (5044, 41509), (5239, 39964), (5356, 39091), (6014, 34814), (6386, 32786), (9991, 20956), (10478, 19982), (12028, 17407), (12772, 16393)]