81840771

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{599}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 134784000

約数和(自身を除く): 52943229

約数列:

[1, 3, 9, 17, 19, 47, 51, 57, 141, 153, 171, 323, 423, 599, 799, 893, 969, 1797, 2397, 2679, 2907, 5391, 7191, 8037, 10183, 11381, 15181, 28153, 30549, 34143, 45543, 84459, 91647, 102429, 136629, 193477, 253377, 478601, 534907, 580431, 1435803, 1604721, 1741293, 4307409, 4814163, 9093419, 27280257, 81840771]

約数ペア:

[(1, 81840771), (3, 27280257), (9, 9093419), (17, 4814163), (19, 4307409), (47, 1741293), (51, 1604721), (57, 1435803), (141, 580431), (153, 534907), (171, 478601), (323, 253377), (423, 193477), (599, 136629), (799, 102429), (893, 91647), (969, 84459), (1797, 45543), (2397, 34143), (2679, 30549), (2907, 28153), (5391, 15181), (7191, 11381), (8037, 10183)]