81293457

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{2791}}^1$

素因数の和:2893

約数の個数: 32

約数和(自身を含む): 132229120

約数和(自身を除く): 50935663

約数列:

[1, 3, 7, 19, 21, 57, 73, 133, 219, 399, 511, 1387, 1533, 2791, 4161, 8373, 9709, 19537, 29127, 53029, 58611, 159087, 203743, 371203, 611229, 1113609, 1426201, 3871117, 4278603, 11613351, 27097819, 81293457]

約数ペア:

[(1, 81293457), (3, 27097819), (7, 11613351), (19, 4278603), (21, 3871117), (57, 1426201), (73, 1113609), (133, 611229), (219, 371203), (399, 203743), (511, 159087), (1387, 58611), (1533, 53029), (2791, 29127), (4161, 19537), (8373, 9709)]