81142257

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{229}}^1\times {\mathrm{359}}^1$

素因数の和:645

約数の個数: 32

約数和(自身を含む): 127180800

約数和(自身を除く): 46038543

約数列:

[1, 3, 7, 21, 47, 141, 229, 329, 359, 687, 987, 1077, 1603, 2513, 4809, 7539, 10763, 16873, 32289, 50619, 75341, 82211, 118111, 226023, 246633, 354333, 575477, 1726431, 3863917, 11591751, 27047419, 81142257]

約数ペア:

[(1, 81142257), (3, 27047419), (7, 11591751), (21, 3863917), (47, 1726431), (141, 575477), (229, 354333), (329, 246633), (359, 226023), (687, 118111), (987, 82211), (1077, 75341), (1603, 50619), (2513, 32289), (4809, 16873), (7539, 10763)]