81243820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{1097}}^1$

素因数の和:1159

約数の個数: 72

約数和(自身を含む): 204017184

約数和(自身を除く): 122773364

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 529, 644, 805, 1058, 1097, 1610, 2116, 2194, 2645, 3220, 3703, 4388, 5290, 5485, 7406, 7679, 10580, 10970, 14812, 15358, 18515, 21940, 25231, 30716, 37030, 38395, 50462, 74060, 76790, 100924, 126155, 153580, 176617, 252310, 353234, 504620, 580313, 706468, 883085, 1160626, 1766170, 2321252, 2901565, 3532340, 4062191, 5803130, 8124382, 11606260, 16248764, 20310955, 40621910, 81243820]

約数ペア:

[(1, 81243820), (2, 40621910), (4, 20310955), (5, 16248764), (7, 11606260), (10, 8124382), (14, 5803130), (20, 4062191), (23, 3532340), (28, 2901565), (35, 2321252), (46, 1766170), (70, 1160626), (92, 883085), (115, 706468), (140, 580313), (161, 504620), (230, 353234), (322, 252310), (460, 176617), (529, 153580), (644, 126155), (805, 100924), (1058, 76790), (1097, 74060), (1610, 50462), (2116, 38395), (2194, 37030), (2645, 30716), (3220, 25231), (3703, 21940), (4388, 18515), (5290, 15358), (5485, 14812), (7406, 10970), (7679, 10580)]