81287648

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{15031}}^1$

素因数の和:15067

約数の個数: 36

約数和(自身を含む): 173303928

約数和(自身を除く): 92016280

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 169, 208, 338, 416, 676, 1352, 2704, 5408, 15031, 30062, 60124, 120248, 195403, 240496, 390806, 480992, 781612, 1563224, 2540239, 3126448, 5080478, 6252896, 10160956, 20321912, 40643824, 81287648]

約数ペア:

[(1, 81287648), (2, 40643824), (4, 20321912), (8, 10160956), (13, 6252896), (16, 5080478), (26, 3126448), (32, 2540239), (52, 1563224), (104, 781612), (169, 480992), (208, 390806), (338, 240496), (416, 195403), (676, 120248), (1352, 60124), (2704, 30062), (5408, 15031)]