81756784

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{911}}^1$

素因数の和:1069

約数の個数: 40

約数和(自身を含む): 162846720

約数和(自身を除く): 81089936

約数列:

[1, 2, 4, 8, 16, 71, 79, 142, 158, 284, 316, 568, 632, 911, 1136, 1264, 1822, 3644, 5609, 7288, 11218, 14576, 22436, 44872, 64681, 71969, 89744, 129362, 143938, 258724, 287876, 517448, 575752, 1034896, 1151504, 5109799, 10219598, 20439196, 40878392, 81756784]

約数ペア:

[(1, 81756784), (2, 40878392), (4, 20439196), (8, 10219598), (16, 5109799), (71, 1151504), (79, 1034896), (142, 575752), (158, 517448), (284, 287876), (316, 258724), (568, 143938), (632, 129362), (911, 89744), (1136, 71969), (1264, 64681), (1822, 44872), (3644, 22436), (5609, 14576), (7288, 11218)]